Oven-Baked 3-Ingredient Chili Mac Casserole (Easy, Cheesy Comfort Food)
If you’re looking for a hearty, budget-friendly, and incredibly simple dinner, this Oven-Baked 3-Ingredient Chili Mac Casserole checks every box. It’s the kind of no-fuss, neighborly meal that shows up at potlucks, family gatherings, and “just because” drop-offs—warm, filling, and made with love.
North American Cuisine
With just macaroni, chili, and cheddar cheese, you get a bubbling, cheesy casserole that tastes like it took far more effort than it actually did.
Why You’ll Love This Recipe
- Only 3 main ingredients
- Perfect for busy weeknights
- Great for meal prep or freezer meals
- Kid-friendly and crowd-pleasing
- Rich, cheesy, and deeply satisfying
Ingredients
- 12 oz dry elbow macaroni
- 4 cups hearty canned or leftover beef chili (with or without beans)
- 3 cups shredded sharp cheddar cheese, divided
Step-by-Step Instructions
1. Preheat the Oven
Preheat your oven to 375°F (190°C).
Place a rack in the center for even baking.
Set a 9×13-inch foil baking pan on a baking sheet for easier handling and transport.
2. Cook the Macaroni
Bring a large pot of salted water to a boil.
Cheese
Add the elbow macaroni and cook until just barely al dente—about 1–2 minutes less than package directions.
- 12 oz dry elbow macaroni
- 4 cups hearty canned or leftover beef chili (with or without beans)
- 3 cups shredded sharp cheddar cheese, divided
This is important because the pasta will continue cooking in the oven.
Drain well and return the pasta to the warm pot.
3. Combine Chili and Cheese
Add to the macaroni:
- 4 cups beef chili
- 2 cups shredded cheddar cheese
Stir until:
Food
- The pasta is evenly coated
- The cheese begins to melt into the chili
The mixture should look loose and saucy—this keeps the casserole moist.
4. Assemble the Casserole
Pour the mixture into your prepared foil baking pan.
Spread evenly and gently press into the corners so it bakes uniformly.
5. Add the Cheesy Topping
Sprinkle the remaining 1 cup cheddar cheese evenly over the top.
Make sure to cover edge-to-edge for that classic melted cheese crust.
6. First Bake (Covered)
Loosely cover the pan with foil (tent it slightly so it doesn’t stick).
Cooking & Recipes
Bake for:
- 20 minutes
The casserole should be hot and bubbling around the edges.
7. Second Bake (Uncovered)
Remove the foil and return the dish to the oven.
Bake for an additional:
- 10–15 minutes
Until:
- Cheese is fully melted
- Top is lightly golden and bubbling
8. Rest Before Serving
Let the casserole rest for 10 minutes after baking.
This helps:
- The sauce thicken
- Portions hold together better when serving
9. Serve and Enjoy
Serve warm straight from the pan.
Perfect for family dinners, potlucks, or sharing with a neighbor.
Pro Tips for Best Results
- Use thick, hearty chili to avoid a watery casserole
- Freshly shredded cheese melts better than pre-shredded
- Don’t overcook pasta before baking
- Add a splash of pasta water if mixture seems too thick
Variations & Add-Ons
- Spicy version: Use hot chili or add red pepper flakes
- Cheese swap: Mix in pepper jack, Colby, or mozzarella
- Extra creamy: Stir in a bit of cream cheese or sour cream
- Protein boost: Add cooked ground beef or turkey (if chili is light)
What to Serve With Chili Mac
Balance this rich dish with lighter sides:
- Green salad with vinaigrette
- Steamed broccoli or green beans
- Cornbread or dinner rolls
- Pickles or coleslaw for contrast
Storage & Freezing
Refrigerator:
Store in an airtight container for up to 4 days
Freezer:
Freeze tightly wrapped for up to 2 months
Reheating:
- Oven: Cover and heat at 350°F until warm
- Microwave: Add a splash of water to keep moist
Nutrition (Approximate per serving)
- Calories: 450–550
- Protein: 20–25g
- Carbohydrates: 40–50g
- Fat: 20–30g
Final Thoughts
This Oven-Baked 3-Ingredient Chili Mac Casserole proves that simple food can still be deeply comforting and satisfying. It’s rich, cheesy, and endlessly reliable—the kind of recipe you keep in your back pocket for busy nights or when someone needs a warm, homemade meal.
Latin Cuisine
