{"id":7237,"date":"2026-04-12T20:50:53","date_gmt":"2026-04-12T20:50:53","guid":{"rendered":"https:\/\/breckas.com\/?p=7237"},"modified":"2026-04-12T20:50:53","modified_gmt":"2026-04-12T20:50:53","slug":"oven-baked-3-ingredient-chili-mac-casserole-the-easiest-weeknight-dinner-youll-ever-make","status":"publish","type":"post","link":"https:\/\/breckas.com\/index.php\/2026\/04\/12\/oven-baked-3-ingredient-chili-mac-casserole-the-easiest-weeknight-dinner-youll-ever-make\/","title":{"rendered":"Oven Baked 3-Ingredient Chili Mac Casserole: The Easiest Weeknight Dinner You\u2019ll Ever Make"},"content":{"rendered":"
\n

Servings: 6\u20138<\/strong> | Prep time: 10 minutes<\/strong> | Bake time: 30\u201335 minutes<\/strong> | Rest time: 10 minutes<\/strong> | Total time: About 50 minutes<\/strong><\/p>\n

Let me tell you about a dinner that has no business being this delicious with only three ingredients. Canned chili. Dry elbow macaroni. Sharp cheddar cheese. That\u2019s it. No chopping. No browning meat. No simmering sauce. Just three simple ingredients transformed into a bubbling, cheesy, deeply satisfying casserole that tastes like you spent all afternoon in the kitchen.<\/p>\n

This Oven Baked 3-Ingredient Chili Mac Casserole<\/strong> is the ultimate weeknight hero.<\/p>\n

It\u2019s budget-friendly (canned chili and pasta cost pennies). It\u2019s pantry-stable (you can make it anytime, no fresh ingredients required). It\u2019s kid-approved (macaroni and cheese meets chili). And it\u2019s so easy that even a beginner cook can nail it on the first try.<\/p>\n

The secret is in the technique. Par-boiling the pasta so it stays firm. Mixing everything while it\u2019s still hot. Tenting with foil to trap steam without sticking to the cheese. And that final uncovered bake to create those gorgeous, caramelized, nutty brown spots on top.<\/p>\n

Serve it with a side salad or some crusty bread, and you\u2019ve got a complete meal that will disappear before you know it.<\/p>\n

\n

Why You\u2019ll Love This Recipe<\/h2>\n
    \n
  • \n

    Only three ingredients<\/strong> \u2013 Canned chili, macaroni, cheddar cheese.<\/p>\n<\/li>\n

  • \n

    No chopping, no browning, no simmering<\/strong> \u2013 Open, boil, mix, bake.<\/p>\n<\/li>\n

  • \n

    Budget-friendly<\/strong> \u2013 This whole casserole costs less than takeout for one person.<\/p>\n<\/li>\n

  • \n

    Pantry meal<\/strong> \u2013 Everything is shelf-stable (except the cheese, which lives in the fridge).<\/p>\n<\/li>\n

  • \n

    Kid-approved<\/strong> \u2013 Mac and cheese meets chili. What\u2019s not to love?<\/p>\n<\/li>\n

  • \n

    Perfect for busy weeknights<\/strong>\u2013 10 minutes of active prep, then the oven does the work.<\/p>\n<\/li>\n

  • \n

    Great for potlucks and game day<\/strong> \u2013 Travels well and feeds a crowd.<\/p>\n<\/li>\n<\/ul>\n

    \n

    Ingredients<\/h2>\n
      \n
    • \n

      Beef chili (canned or leftover)<\/strong> \u2013 4 cups (about two 15-ounce cans)<\/p>\n<\/li>\n

    • \n

      Dry elbow macaroni<\/strong> \u2013 12 ounces (about 3 cups dry)<\/p>\n<\/li>\n

    • \n

      Sharp cheddar cheese (shredded, divided)<\/strong> \u2013 3 cups<\/p>\n<\/li>\n<\/ul>\n

      Ingredient Notes<\/h3>\n

      What kind of canned chili?<\/strong> Any canned beef chili works. Use your favorite brand \u2014 Homestyle, no-bean, with beans, spicy, or mild. If you use chili with beans, you\u2019ll get extra texture and fiber. If you use no-bean chili, the casserole will be more mac-and-cheese-forward. Leftover homemade chili is fantastic here too.<\/p>\n

      What if I don\u2019t have 4 cups of chili?<\/strong>Use two 15-ounce cans (about 3\u00be cups) \u2014 close enough. Or supplement with a can of tomato sauce and an extra sprinkle of chili powder.<\/p>\n

      What kind of pasta?<\/strong> Elbow macaroni is traditional, but small shells, cavatappi, or any short tube pasta works. Avoid long noodles (spaghetti, fettuccine) \u2014 they won\u2019t distribute evenly.<\/p>\n

      What kind of cheddar?<\/strong> Sharp cheddar provides the most flavor. Mild cheddar works but is less pronounced. Freshly shredded cheese melts more smoothly than pre-shredded (which contains anti-caking agents). If using pre-shredded, expect a slightly grainier texture \u2014 it will still taste great.<\/p>\n

      Can I add other cheeses?<\/strong>Absolutely. Try adding:<\/p>\n

        \n
      • \n

        Monterey Jack<\/strong> \u2013 Creamy and mild<\/p>\n<\/li>\n

      • \n

        Pepper Jack<\/strong> \u2013 For a spicy kick<\/p>\n<\/li>\n

      • \n

        Colby Jack<\/strong> \u2013 Similar to cheddar but milder<\/p>\n<\/li>\n

      • \n

        Parmesan<\/strong> \u2013 Sprinkle on top for a nutty finish<\/p>\n<\/li>\n<\/ul>\n

        \n

        Step-by-Step Directions<\/h2>\n

        Step 1: Preheat and Par-Boil<\/h3>\n

        Preheat your oven to 375\u00b0F (190\u00b0C)<\/strong> .<\/p>\n

        Bring a large pot of salted water to a rolling boil. Add the 12 ounces of dry elbow macaroni and cook for 1\u00bd to 2 minutes less than the package directions<\/strong>.<\/p>\n

        \n

        Why this matters (the \u201cmechanical\u201d step):<\/strong> If you cook the pasta to full tenderness on the stove, it will become mushy after 30\u201335 minutes in the oven. Keeping it firm ensures it holds its shape against the heavy chili and cheese. The pasta will finish cooking in the casserole.<\/p>\n<\/blockquote>\n

        Drain the macaroni well. Do not rinse \u2014 you want the starch to help thicken the casserole.<\/p>\n

        Step 2: The Pot Mix<\/h3>\n

        Return the drained macaroni to the warm pot (off the heat). Stir in:<\/p>\n

          \n
        • \n

          4 cups of beef chili<\/strong><\/p>\n<\/li>\n

        • \n

          2 cups of shredded sharp cheddar cheese<\/strong> (reserve 1 cup for the top)<\/p>\n<\/li>\n<\/ul>\n

          Stir until the mixture is glossy and the cheese begins to pull into strings. The residual heat from the pasta and pot will start melting the cheese.<\/p>\n

          The Texture Rule:<\/strong> If the mixture looks too dry, add a small splash of water or beef broth (about \u00bc cup). You want it \u201csaucy\u201d because the pasta will continue to absorb liquid as it bakes. A dry-looking casserole going into the oven will come out dry and pasty.<\/p>\n

          Step 3: The Even Layer<\/h3>\n

          Pour the mixture into a 9\u00d713-inch baking pan<\/strong> (a disposable foil pan works great for easy cleanup). Spread it evenly into the corners.<\/p>\n

          Sprinkle the remaining 1 cup of shredded sharp cheddar cheese<\/strong>evenly over the top.<\/p>\n

          Step 4: The Tented Bake<\/h3>\n

          Cover the pan loosely with aluminum foil, tenting it so the foil doesn\u2019t touch the cheese<\/strong>. If the foil touches the cheese, the cheese will stick to the foil and pull off when you remove it.<\/p>\n

          Bake for 20 minutes<\/strong> with the foil on.<\/p>\n

          Remove the foil and bake for another 10 to 15 minutes<\/strong>uncovered, until the cheese is bubbly and developing small, toasted brown spots.<\/p>\n

          \n

          Why the uncovered finish matters:<\/strong>Those small, toasted brown spots on the cheese indicate caramelization \u2014 the sugars in the cheese are browning, creating a deep, nutty, savory flavor. This is what takes the casserole from \u201cgood\u201d to \u201cgreat.\u201d<\/p>\n<\/blockquote>\n

          Step 5: The Essential Rest<\/h3>\n

          Remove the casserole from the oven. Let it rest for 10 minutes<\/strong> before serving.<\/p>\n

          \n

          Why rest matters:<\/strong>This rest allows the starches in the pasta to \u201cbond\u201d with the fats in the cheese and chili. Slicing in too early will result in the chili running to the bottom of the pan and the casserole falling apart. Waiting 10 minutes ensures a cohesive, scoopable meal that holds its shape on the plate.<\/p>\n<\/blockquote>\n

          Step 6: Serve<\/h3>\n

          Scoop into bowls and serve hot. Garnish with fresh parsley, sliced green onions, or a dollop of sour cream if desired.<\/p>\n

          \n

          Variations & Tips<\/h2>\n

          Make It Spicy<\/h3>\n
            \n
          • \n

            Use spicy chili<\/strong> (look for \u201chot\u201d or \u201cspicy\u201d on the can)<\/p>\n<\/li>\n

          • \n

            Add 1 teaspoon of cayenne pepper<\/strong>to the chili mixture<\/p>\n<\/li>\n

          • \n

            Stir in \u00bd cup of diced pickled jalape\u00f1os<\/strong><\/p>\n<\/li>\n

          • \n

            Top with sliced fresh jalape\u00f1os<\/strong>before the final bake<\/p>\n<\/li>\n

          • \n

            Use Pepper Jack cheese<\/strong>instead of or in addition to cheddar<\/p>\n<\/li>\n<\/ul>\n

            Add Vegetables<\/h3>\n

            Stir in any of these along with the chili:<\/p>\n

              \n
            • \n

              1 cup frozen corn<\/strong> (no need to thaw)<\/p>\n<\/li>\n

            • \n

              1 cup diced bell peppers<\/strong>(any color)<\/p>\n<\/li>\n

            • \n

              1 can (4 oz) diced green chiles<\/strong><\/p>\n<\/li>\n

            • \n

              1 cup frozen peas and carrots<\/strong><\/p>\n<\/li>\n<\/ul>\n

              Make It Creamier<\/h3>\n
                \n
              • \n

                Stir in \u00bd cup of sour cream<\/strong>or cream cheese<\/strong> along with the chili<\/p>\n<\/li>\n

              • \n

                Use half cheddar, half Velveeta<\/strong> for an ultra-creamy texture<\/p>\n<\/li>\n

              • \n

                Add \u00bd cup of heavy cream<\/strong> if the mixture seems dry<\/p>\n<\/li>\n<\/ul>\n

                Make It with Homemade Chili<\/h3>\n

                Leftover homemade chili is fantastic here. Use any beef chili recipe \u2014 or even turkey chili, white chicken chili, or vegetarian chili. Just make sure you have about 4 cups.<\/p>\n

                Make It with Ground Beef (No Canned Chili)<\/h3>\n

                Brown 1 pound of ground beef with 1 small diced onion and 2 cloves of garlic. Add 1 can (15 oz) of tomato sauce, 1 can (15 oz) of diced tomatoes (undrained), 2 tablespoons of chili powder, 1 teaspoon of cumin, and salt to taste. Simmer for 10 minutes. Proceed with the recipe.<\/p>\n

                Make It Gluten-Free<\/h3>\n

                Use gluten-free elbow macaroni<\/strong>(cook according to package directions, still par-boiling by 1\u20132 minutes). Check that your canned chili is gluten-free (most are, but check the label).<\/p>\n

                Make It in a Skillet (Stovetop Only)<\/h3>\n
                  \n
                1. \n

                  Cook the macaroni as directed.<\/p>\n<\/li>\n

                2. \n

                  In a large oven-safe skillet, combine the drained macaroni, chili, and 2 cups of cheese.<\/p>\n<\/li>\n

                3. \n

                  Top with remaining cheese.<\/p>\n<\/li>\n

                4. \n

                  Cover and cook over medium-low heat for 10 minutes until cheese melts.<\/p>\n<\/li>\n

                5. \n

                  (Optional) Transfer to the oven to brown the top.<\/p>\n<\/li>\n<\/ol>\n

                  \n

                  Storage & Reheating<\/h2>\n

                  Refrigerator:<\/strong> Store leftovers in an airtight container for up to 5 days. The casserole will firm up as it cools \u2014 that\u2019s normal.<\/p>\n

                  Reheating:<\/strong><\/p>\n

                    \n
                  • \n

                    Microwave:<\/strong> 1\u20132 minutes per serving. Add a splash of water or broth if it seems dry.<\/p>\n<\/li>\n

                  • \n

                    Oven:<\/strong> 350\u00b0F for 10\u201315 minutes, covered with foil to prevent drying out.<\/p>\n<\/li>\n

                  • \n

                    Skillet:<\/strong> Warm over medium-low heat, stirring occasionally, adding a splash of water or broth as needed.<\/p>\n<\/li>\n<\/ul>\n

                    Freezing:<\/strong> This casserole freezes beautifully for up to 3 months. Assemble the casserole completely but do not bake. Wrap tightly with foil and freeze. Bake from frozen at 375\u00b0F for 45\u201350 minutes (covered for the first 30 minutes, uncovered for the last 15\u201320). You can also freeze baked leftovers \u2014 just thaw overnight before reheating.<\/p>\n

                    \n

                    Frequently Asked Questions (FAQs)<\/h2>\n

                    Can I use leftover chili from the fridge?<\/strong><\/p>\n

                    Absolutely. Leftover homemade chili is even better than canned. Use 4 cups of leftover chili. If it\u2019s very thick, add a splash of water or broth to loosen it before mixing with the pasta.<\/p>\n

                    Can I use a different pasta shape?<\/strong><\/p>\n

                    Yes. Small shells, cavatappi (corkscrew), rotini, or penne all work well. Avoid long noodles (spaghetti, fettuccine, linguine) \u2014 they won\u2019t distribute evenly and will clump together. Adjust cooking time based on the package directions, still par-boiling by 1\u20132 minutes.<\/p>\n

                    Why is my casserole dry?<\/strong><\/p>\n

                    A few possibilities:<\/p>\n

                      \n
                    • \n

                      Your chili was very thick (add a splash of water or broth next time)<\/p>\n<\/li>\n

                    • \n

                      You overbaked it (check at 30 minutes total bake time)<\/p>\n<\/li>\n

                    • \n

                      You used lean or low-fat cheese (doesn\u2019t melt as creamy)<\/p>\n<\/li>\n

                    • \n

                      You didn\u2019t add enough chili (measure 4 cups)<\/p>\n<\/li>\n<\/ul>\n

                      Why is my casserole watery?<\/strong><\/p>\n

                      A few possibilities:<\/p>\n

                        \n
                      • \n

                        Your chili was very thin (add less next time, or simmer to thicken)<\/p>\n<\/li>\n

                      • \n

                        You added too much water or broth<\/p>\n<\/li>\n

                      • \n

                        You didn\u2019t drain the pasta well (excess water on the noodles)<\/p>\n<\/li>\n

                      • \n

                        You undercooked the pasta (releases more starch as it finishes baking)<\/p>\n<\/li>\n<\/ul>\n

                        Can I double this recipe?<\/strong><\/p>\n

                        Yes. Use a larger baking dish (10\u00d715-inch or two 9\u00d713-inch pans). Double all ingredients. Bake time may increase by 5\u201310 minutes. Check for doneness when the cheese is bubbly and browned.<\/p>\n

                        Can I make this in a slow cooker?<\/strong><\/p>\n

                        Yes, but the texture will be different (softer, less caramelized). Cook the pasta fully (not par-boiled) and combine all ingredients in the slow cooker. Cook on LOW for 2\u20133 hours or HIGH for 1\u20132 hours. For a crispy top, transfer to a baking dish and broil for 2\u20133 minutes before serving.<\/p>\n

                        Can I use non-dairy cheese?<\/strong><\/p>\n

                        Yes. Use your favorite dairy-free shredded cheddar. The texture will be different (it may not melt as smoothly), and the flavor will vary by brand. Daiya, Violife, and Follow Your Heart all work reasonably well.<\/p>\n

                        \n

                        What to Serve With It<\/h2>\n

                        This casserole is a complete meal on its own,<\/strong> but here are some pairing ideas:<\/p>\n

                        For a simple dinner:<\/strong><\/p>\n

                          \n
                        • \n

                          Side salad<\/strong> \u2013 With ranch or Italian dressing<\/p>\n<\/li>\n

                        • \n

                          Steamed green beans or broccoli<\/strong> \u2013 Adds color and crunch<\/p>\n<\/li>\n

                        • \n

                          Crusty bread<\/strong> \u2013 For sopping up any leftover chili sauce<\/p>\n<\/li>\n<\/ul>\n

                          For game day or potlucks:<\/strong><\/p>\n

                            \n
                          • \n

                            Cornbread<\/strong> \u2013 Sweet and crumbly<\/p>\n<\/li>\n

                          • \n

                            Coleslaw<\/strong> \u2013 Creamy or vinegar-based<\/p>\n<\/li>\n

                          • \n

                            Pickles or pickled vegetables<\/strong> \u2013 Bright and acidic to cut the richness<\/p>\n<\/li>\n<\/ul>\n

                            For toppings (let people customize):<\/strong><\/p>\n

                              \n
                            • \n

                              Sour cream<\/p>\n<\/li>\n

                            • \n

                              Sliced green onions<\/p>\n<\/li>\n

                            • \n

                              Fresh cilantro<\/p>\n<\/li>\n

                            • \n

                              Hot sauce (Tabasco, Cholula, or Sriracha)<\/p>\n<\/li>\n

                            • \n

                              Diced fresh tomatoes<\/p>\n<\/li>\n

                            • \n

                              Sliced black olives<\/p>\n<\/li>\n<\/ul>\n

                              \n

                              Why This 3-Ingredient Recipe Works<\/h2>\n

                              You might be skeptical \u2014 three ingredients? That can\u2019t be that good. But here\u2019s why it works:<\/p>\n

                              Canned chili<\/strong> is already a complete flavor base. It has seasoned beef, tomatoes, beans (if you use that kind), and a blend of chili spices. You\u2019re not starting from scratch \u2014 you\u2019re starting from delicious.<\/p>\n

                              Elbow macaroni<\/strong> provides the perfect texture. Its small, curved shape holds onto the chili and cheese, and it cooks evenly in the casserole.<\/p>\n

                              Sharp cheddar cheese<\/strong> adds sharpness, creaminess, and that glorious browned top. It bridges the chili and pasta, creating a cohesive, scoopable casserole.<\/p>\n

                              The techniques \u2014 par-boiling, tenting, resting \u2014 are what elevate this from \u201cdump and bake\u201d to genuinely good. Follow those steps, and you\u2019ll have a casserole that tastes like you put in way more effort than you actually did.<\/p>\n

                              \n

                              Final Thoughts<\/h2>\n

                              This Oven Baked 3-Ingredient Chili Mac Casserole is proof that dinner doesn\u2019t need to be complicated to be delicious. Three ingredients. One pan. About 50 minutes. And a meal that will have everyone asking for seconds \u2014 and the recipe.<\/p>\n

                              Keep canned chili, a box of macaroni, and a bag of shredded cheddar in your pantry at all times. You\u2019re never more than an hour away from a hot, satisfying, crowd-pleasing dinner.<\/p>\n

                              Make it on a busy Tuesday. Make it for a potluck. Make it when you\u2019re staring into the fridge and nothing looks good. Just make it. You\u2019ll be glad you did.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

                              Servings: 6\u20138 | Prep time: 10 minutes | Bake time: 30\u201335 minutes | Rest time: 10 minutes | Total time:…<\/p>\n","protected":false},"author":1,"featured_media":7238,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"Oven Baked 3-Ingredient Chili Mac Casserole: The Easiest Weeknight Dinner You\u2019ll Ever Make - Grandma Baking Recipes","description":"Servings: 6\u20138 | Prep time: 10 minutes | Bake time: 30\u201335 minutes | Rest time: 10 minutes | Total time: About 50 minutes Let me tell you about a dinner that has"},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7237","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/posts\/7237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/comments?post=7237"}],"version-history":[{"count":1,"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/posts\/7237\/revisions"}],"predecessor-version":[{"id":7239,"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/posts\/7237\/revisions\/7239"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/media\/7238"}],"wp:attachment":[{"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/media?parent=7237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/categories?post=7237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/breckas.com\/index.php\/wp-json\/wp\/v2\/tags?post=7237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}