There are casseroles, and then there is chili mac casserole—a glorious mashup of two beloved comfort foods: hearty, meaty chili and creamy, cheesy macaroni. Baked until bubbly and golden, this oven-baked chili mac casserole is the kind of dish that disappears quickly at potlucks, satisfies hungry families on busy weeknights, and tastes even better the next day. It is budget-friendly, easy to make, and endlessly customizable.
Chili mac is a classic one-pot meal that combines ground beef, beans, tomatoes, chili seasonings, and macaroni pasta, all topped with a generous blanket of melted cheese. This oven-baked version takes it to the next level. The pasta cooks right in the sauce, absorbing all the rich, spicy flavors, and the cheese melts into a golden, bubbly crust that is impossible to resist.
This recipe is designed for simplicity and flexibility. You can make it as mild or as spicy as you like, add extra vegetables, or swap the ground beef for turkey or plant-based meat. It is a complete meal in one dish, perfect for feeding a crowd or for meal prep. Once you try this oven-baked chili mac casserole, it will become a regular in your dinner rotation.
Why You Will Love This Chili Mac Casserole
· All the flavors of chili and mac and cheese: In one satisfying casserole.
· One-dish meal: Everything bakes together in a single casserole dish.
· Budget-friendly: Uses affordable pantry staples.
· Great for crowds: Easily doubles for potlucks and family dinners.
· Freezer-friendly: Make a double batch and save one for later.
· Customizable: Adjust the spice, add vegetables, or swap the protein.
· Crowd-pleaser: Kids and adults alike love this dish.
Ingredients
Here is everything you need for oven-baked chili mac casserole:
For the Chili Mac Base:
· 1 pound lean ground beef (85/15 or 90/10)
· 1 small yellow onion, finely diced
· 3 cloves garlic, minced
· 1 green bell pepper, diced (optional)
· 1 can (15 ounces) kidney beans, drained and rinsed
· 1 can (15 ounces) diced tomatoes, undrained
· 1 can (8 ounces) tomato sauce
· 1 cup beef broth or water
· 2 tablespoons tomato paste
· 2 tablespoons chili powder
· 1 teaspoon ground cumin
· 1 teaspoon paprika (smoked or sweet)
· ½ teaspoon dried oregano
· ½ teaspoon salt (adjust to taste)
· ¼ teaspoon black pepper
· ¼ teaspoon cayenne pepper (optional, for heat)
For the Pasta and Cheese:
· 8 ounces elbow macaroni (or shells, rotini, or cavatappi), uncooked
· 2 cups shredded sharp cheddar cheese (divided)
· 1 cup shredded Monterey Jack cheese (or mozzarella)
· ½ cup sour cream (optional, for creaminess)
For Garnish (Optional):
· Fresh parsley or cilantro, chopped
· Green onions, sliced
· Sour cream
· Jalapeño slices
Step-by-Step Instructions
Step 1: Preheat and Prepare
Preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). Grease a 9×13-inch baking dish or a 3-quart casserole dish with non-stick spray or a little oil.
Step 2: Brown the Ground Beef
Heat a large skillet or Dutch oven over medium-high heat. Add the ground beef and cook, breaking it apart with a wooden spoon, until browned and no longer pink, about 5 to 7 minutes. Add the diced onion and bell pepper (if using) and cook for 3 to 4 minutes until softened. Add the minced garlic and cook for 30 seconds until fragrant. Drain excess fat if necessary.
Step 3: Build the Chili Sauce
Stir in the kidney beans, diced tomatoes (with their juices), tomato sauce, beef broth, tomato paste, chili powder, cumin, paprika, oregano, salt, black pepper, and cayenne pepper (if using). Bring the mixture to a simmer. Cook for 5 minutes, stirring occasionally.
Step 4: Add the Uncooked Pasta
Stir the uncooked elbow macaroni into the chili mixture. Ensure the pasta is submerged in the liquid. If the mixture seems dry, add an additional ½ cup of water or broth.
Step 5: Transfer to Baking Dish
Pour the chili mac mixture into the prepared baking dish, spreading it into an even layer.
Step 6: Add the Cheese
Sprinkle 1½ cups of the shredded cheddar cheese and all of the Monterey Jack cheese evenly over the top. If using sour cream, dollop it over the cheese and swirl gently with a knife.
Step 7: Bake Covered
Cover the baking dish with aluminum foil. Bake for 30 minutes.
Step 8: Uncover and Add Remaining Cheese
Remove the foil. Sprinkle the remaining ½ cup of cheddar cheese over the top. Bake uncovered for another 10 to 15 minutes, until the casserole is bubbly, the pasta is tender, and the cheese is golden brown and melted.
Step 9: Rest and Serve
Let the chili mac casserole rest for 10 minutes before serving. This allows the casserole to set for cleaner slices. Garnish with fresh parsley, green onions, sour cream, or jalapeño slices. Serve warm.
Cooking Tips and Pro Tips for Best Results
· Do not pre-cook the pasta: The pasta cooks directly in the chili sauce, absorbing all the flavors. Make sure there is enough liquid to cover the pasta—if it looks dry, add an extra ½ cup of broth.
· Use freshly shredded cheese: Pre-shredded cheese contains anti-caking agents that prevent smooth melting. Grate cheddar and Monterey Jack from a block for the best, creamiest topping.
· Adjust the spice level: For a mild chili mac, omit the cayenne and use mild chili powder. For extra heat, add a diced jalapeño, extra cayenne, or use hot chili powder.
· Let it rest: Resting allows the casserole to set, making it easier to serve. If you cut into it immediately, it may be runny.
· Make it ahead: Assemble the casserole (without baking), cover, and refrigerate for up to 24 hours. Add 10 to 15 minutes to the baking time.
· Add vegetables: Corn, zucchini, or mushrooms are excellent additions. Add them when you add the beans.
Variations and Substitutions
· Turkey chili mac: Substitute ground turkey for the beef. Add 1 tablespoon of olive oil when browning.
· Vegetarian chili mac: Omit the ground beef and add 1 cup of cooked lentils or an extra can of beans (black beans or pinto beans). Use vegetable broth.
· Spicy chili mac: Use hot chili powder, add 1 diced jalapeño, and use pepper jack cheese instead of Monterey Jack.
· Creamy chili mac: Stir in ½ cup of cream cheese or sour cream into the chili sauce before baking.
· Loaded chili mac: Top with crushed tortilla chips, pickled jalapeños, and a drizzle of ranch dressing.
· Gluten-free: Use gluten-free elbow macaroni. Ensure your broth and tomato products are gluten-free.
· Extra cheesy: Use a blend of cheddar, Monterey Jack, and Pepper Jack. Add ½ cup of grated Parmesan to the topping.
· Add a crunchy topping: Mix ½ cup of panko breadcrumbs with 2 tablespoons of melted butter and sprinkle over the cheese during the last 10 minutes of baking.
Serving Suggestions
This chili mac casserole is a complete meal on its own, but it pairs beautifully with:
· Cornbread: Sweet, buttery cornbread is a perfect match.
· Simple green salad: A crisp salad with a tangy vinaigrette cuts through the richness.
· Sour cream and jalapeños: Classic chili toppings.
· Crusty bread: For sopping up any extra sauce.
· Roasted vegetables: Green beans or broccoli on the side.
Storage and Reheating Instructions
Refrigerator Storage
Store leftover chili mac casserole in an airtight container in the refrigerator for up to 5 days. The flavors continue to meld, making leftovers even better.
Freezer Storage
This casserole freezes beautifully for up to 2 months. Cool completely, then transfer to a freezer-safe container. Thaw overnight in the refrigerator before reheating.
Reheating Instructions
· Oven method (best): Preheat to 325 degrees Fahrenheit. Cover the casserole with foil and heat for 20 to 25 minutes, until warmed through.
· Microwave method: Heat individual portions for 60 to 90 seconds, stirring halfway through.
· Skillet method: Reheat in a covered skillet over medium-low heat, adding a splash of broth or water if needed.
Nutritional Information
Approximate per serving (based on 6 servings, with ground beef and cheddar cheese):
· Calories: 540
· Protein: 32g
· Fat: 24g
· Saturated Fat: 12g
· Carbohydrates: 50g
· Fiber: 8g
· Sugar: 8g
· Sodium: 890mg
· Vitamin A: 20% DV
· Vitamin C: 25% DV
· Calcium: 30% DV
· Iron: 25% DV
Note: Nutritional values are estimates and will vary based on specific ingredients and portion sizes.
Frequently Asked Questions
Can I use any pasta shape?
Yes. Elbow macaroni is traditional, but shells, rotini, cavatappi, or penne all work well. The key is using a short pasta that holds the sauce.
Do I need to cook the pasta before adding it to the casserole?
No. The pasta cooks directly in the chili sauce as the casserole bakes. This allows the pasta to absorb the chili flavors. Just make sure there is enough liquid to cover the pasta.
Why is my pasta still hard after baking?
Hard pasta usually means there was not enough liquid. Before baking, ensure the pasta is submerged in the sauce. If it looks dry, add an extra ½ cup of broth or water.
Can I make this in a slow cooker?
Yes. Brown the beef and onions in a skillet first, then transfer to a slow cooker with the remaining ingredients (except the cheese). Cook on LOW for 4 to 5 hours or on HIGH for 2 to 3 hours. Sprinkle cheese on top during the last 30 minutes.
Can I use canned chili instead of making my own?
Yes. To save time, use 2 cans (15 ounces each) of your favorite chili (with beans). Combine with the cooked ground beef and uncooked pasta, then add enough broth to cover the pasta. Bake as directed.
How do I get a crispy cheese topping?
Bake uncovered for the final 10 to 15 minutes. For an extra-crispy top, broil for 1 to 2 minutes at the end, watching carefully to prevent burning.
Is this recipe gluten-free?
Not as written. Use gluten-free elbow macaroni to make it gluten-free. Ensure your broth and tomato products are gluten-free.
Can I add corn to this casserole?
Absolutely. Add 1 cup of frozen or canned corn (drained) when you add the beans.
Final Thoughts
Chili mac casserole is the ultimate weeknight comfort food. It combines the hearty, smoky, spicy flavors of chili with the creamy, cheesy goodness of macaroni and cheese. Baked until bubbly and golden, this one-dish meal is satisfying, budget-friendly, and guaranteed to please both kids and adults.
This recipe is forgiving and flexible. Make it as mild or as spicy as you like. Add corn, bell peppers, or extra beans. Top it with sour cream, jalapeños, or crushed tortilla chips. However you make it, this oven-baked chili mac casserole will become a family favorite.
So brown that beef, open those cans, and stir in that uncooked pasta. In about an hour, you will have a bubbling, cheesy, irresistible casserole that will bring everyone to the table. That is the beauty of simple cooking—hearty flavors, minimal fuss, and a whole lot of love. Enjoy.