This Ultimate Cheesy Ground Beef and Macaroni Casserole is the perfect combination of tender pasta, savory seasoned beef, colorful vegetables, and a rich homemade cheddar cheese sauce.
It’s an easy, family-friendly dinner that’s comforting, filling, budget-conscious, and ideal for busy weeknights. Everything comes together in one bubbling, golden casserole that is perfect for meal prep, potlucks, or feeding a hungry family.
Recipe Overview
| Details | Information |
| Prep Time | 20 minutes |
| Cook Time | 25 minutes |
| Total Time | 45 minutes |
| Servings | 8 generous servings |
| Difficulty | Beginner |
| Category | Dinner / Casserole |
| Cuisine | American Comfort Food |
| Dietary | High-Protein; contains dairy and gluten |
Why You’ll Love This Recipe
- Creamy and cheesy: A homemade cheddar sauce coats every piece of pasta.
- Hearty and filling: Ground beef adds plenty of savory flavor and protein.
- Family-friendly: Peas and carrots blend naturally into the casserole.
- Easy weeknight meal: Simple ingredients and straightforward preparation.
- Make-ahead friendly: Assemble it ahead of time and bake when needed.
- Freezer-friendly: Perfect for preparing meals in advance.
Ingredients
The Beef, Pasta and Vegetable Base
| Ingredient | Quantity | Notes |
| Elbow macaroni | 1 lb (450 g) | Cooked just until al dente |
| Lean ground beef | 1½ lbs (680 g) | 80/20 or 90/10 |
| Frozen peas and carrots | 1½ cups | Thawed |
| Yellow onion | 1 medium | Finely diced |
| Garlic | 3 cloves | Minced |
Homemade Cheese Sauce
| Ingredient | Quantity | Notes |
| Unsalted butter | ¼ cup (56 g) | For the roux |
| All-purpose flour | ¼ cup (32 g) | For thickening |
| Whole milk | 2½ cups (600 ml) | Warmed |
| Sharp cheddar cheese | 4 cups, shredded | Divided |
| Fresh chives or green onions | ¼ cup | Chopped for garnish |
Step-by-Step Instructions
Step 1: Prepare the Oven and Pasta
Preheat your oven to 175°C (350°F).
Lightly grease a 9 × 13-inch (23 × 33 cm) baking dish.
Bring a large pot of salted water to a boil. Cook the elbow macaroni according to the package instructions until just al dente.
Don’t overcook the pasta because it will continue cooking in the oven.
Drain thoroughly and set aside.
Step 2: Brown the Ground Beef
Place a large skillet over medium-high heat.
Add the diced onion and ground beef.
Cook for approximately 6–8 minutes, breaking the meat apart with a wooden spoon, until the beef is completely browned and no pink remains.
Drain excess grease if necessary.
Add the minced garlic and cook for another 30–60 seconds, stirring constantly until fragrant.
Remove from the heat.
Step 3: Prepare the Roux
Melt the butter in a large saucepan over medium heat.
Once melted, whisk in the flour.
Continue whisking and cook for approximately 2 minutes.
The mixture should form a smooth paste and lose its raw flour smell.
Step 4: Make the Cheese Sauce
Gradually pour the warm milk into the roux while whisking continuously.
Continue cooking and whisking until the sauce becomes smooth and noticeably thickened, approximately 4–6 minutes.
The sauce should be hot and gently bubbling around the edges, but avoid aggressively boiling it.
Remove the saucepan from the heat.
Add 3 cups of shredded cheddar cheese a handful at a time, stirring after each addition until completely melted and smooth.
Step 5: Combine Everything
Place the cooked macaroni in a very large mixing bowl.
Add:
- The browned ground beef
- Cooked onions and garlic
- Thawed peas and carrots
- Homemade cheese sauce
Gently stir everything together until the pasta and vegetables are evenly coated with the creamy cheese sauce.
Taste and adjust seasoning if desired.
Step 6: Assemble the Casserole
Transfer the mixture to the prepared 9 × 13-inch baking dish.
Spread it evenly into the dish.
Sprinkle the remaining 1 cup of shredded cheddar cheese evenly over the surface.
Step 7: Bake
Place the casserole in the preheated oven.
Bake uncovered for 20–25 minutes, or until the cheese is completely melted and bubbling.
For a more golden top, you can briefly place the casserole under the broiler at the end, watching carefully to prevent burning.
Step 8: Rest and Garnish
Remove the casserole from the oven.
Allow it to rest for approximately 5 minutes.
Sprinkle freshly chopped chives or green onions over the top.
Serve warm.
Best Tips for Perfect Cheesy Beef Casserole
Grate Your Cheese Fresh
Freshly grated cheddar generally melts more smoothly than many pre-shredded cheeses, which can contain anti-caking ingredients.
Don’t Overcook the Pasta
Cook the macaroni just until al dente. Soft pasta can become mushy after baking.
Drain Excess Beef Fat
Removing excess grease prevents the casserole from becoming oily.
Cook the Flour Properly
Give the roux approximately two minutes to cook. This helps eliminate the raw flour flavor.
Add Cheese Off the Heat
Removing the sauce from direct heat before adding the cheddar helps produce a smoother cheese sauce.
Let It Rest
Five minutes of resting allows the sauce to settle slightly, making the casserole easier to serve.
Best Ingredient Options and Substitutions
Ground Beef
Use lean ground beef for a lighter casserole, or an 80/20 blend for richer flavor.
Ground turkey or ground chicken can also be substituted.
Cheese
Sharp cheddar provides the strongest classic flavor.
You can also combine cheddar with:
- Monterey Jack
- Colby
- Pepper Jack
- Mozzarella
Milk
Whole milk produces the creamiest sauce. Two-percent milk can also be used.
Vegetables
Peas and carrots can be replaced with:
- Broccoli
- Corn
- Green beans
- Diced bell peppers
- Spinach
- Mushrooms
Recipe Variations
Southwestern Beef Macaroni Casserole
Replace the peas and carrots with black beans, corn, and diced green chiles.
Use a combination of cheddar and pepper Jack cheese and add a little chili powder and cumin.
Bacon Cheeseburger Casserole
Add cooked, crumbled bacon to the beef mixture.
For an extra cheeseburger-style flavor, add a small amount of diced pickles before serving.
Taco Macaroni Casserole
Season the beef with taco seasoning and add corn and black beans.
Top with cheddar and Monterey Jack cheese.
Lighter Version
Use lean ground turkey or chicken, reduced-fat milk, and a slightly smaller amount of cheese.
Whole-wheat macaroni can also add extra fiber.
What to Serve With This Casserole
Because this dish is rich and creamy, fresh and crisp sides pair particularly well with it.
Try serving it with:
- Green salad
- Cucumber and tomato salad
- Steamed broccoli
- Roasted green beans
- Coleslaw
- Garlic bread
- Crusty dinner rolls
A simple salad with a light vinaigrette is especially good for balancing the richness.
Make-Ahead Instructions
You can assemble the casserole up to 2 days ahead.
Prepare the recipe through the assembly stage, but don’t bake it.
Cover the dish tightly with foil and refrigerate.
When ready to bake, remove it from the refrigerator while the oven preheats.
Bake at 175°C (350°F), adding approximately 10–15 minutes to the baking time because the casserole will be chilled.
Make sure the center is thoroughly hot before serving.
Storage
Allow leftover casserole to cool promptly before transferring it to airtight containers.
Store in the refrigerator for up to 4 days.
Keep the casserole covered to prevent it from drying out.
Reheating
Individual Portions
Place a serving on a microwave-safe plate.
Add a small splash of milk over the top to help restore moisture.
Cover loosely and microwave at medium power for approximately 1–2 minutes, or until heated through.
Cooking time will vary depending on portion size and microwave strength.
Reheating the Entire Casserole
Cover the baking dish tightly with aluminum foil.
Bake at 175°C (350°F) for approximately 20 minutes, or until the center is hot.
Remove the foil during the final few minutes if you want to refresh the melted cheese topping.
Freezing
This casserole can be frozen either before or after baking.
For an unbaked casserole, assemble it completely and allow the ingredients to cool before covering.
Wrap the dish tightly with plastic wrap followed by aluminum foil.
Freeze for up to 3 months for best quality.
Thaw overnight in the refrigerator before baking.
Fully cooked leftovers can also be portioned into freezer-safe containers and frozen.
Common Mistakes to Avoid
1. Overcooking the Pasta
Very soft pasta can become mushy during baking.
2. Skipping the Roux
The butter-and-flour roux gives the cheese sauce its creamy, stable consistency.
3. Adding Cheese Over High Heat
Very high heat can cause the cheese sauce to become grainy or separate.
4. Leaving Too Much Beef Fat
Excess grease can make the finished casserole oily.
5. Using Cold Milk
Warm milk incorporates more easily into the roux and helps prevent lumps.
6. Cutting Into It Immediately
Give the casserole a few minutes to rest so the sauce can settle.
Nutrition Estimate
Approximate values per serving:
| Nutrient | Amount per Serving |
| Calories | 520 kcal |
| Total Fat | 28 g |
| Saturated Fat | 15 g |
| Cholesterol | 90 mg |
| Sodium | 480 mg |
| Total Carbohydrates | 38 g |
| Dietary Fiber | 3 g |
| Sugars | 6 g |
| Protein | 32 g |
Nutrition information is an estimate and can vary according to the specific ingredients, cheese, ground beef, and portion size used.
Frequently Asked Questions
Can I use another type of pasta?
Absolutely. Penne, rotini, shells, ziti, and other short pasta shapes work well. Choose sturdy shapes that can hold the cheese sauce.
Why is my cheese sauce too thin?
The sauce may need additional cooking time after the milk is added. Continue gently simmering while whisking until it coats the back of a spoon.
Why is my cheese sauce grainy?
High heat can cause cheese proteins and fats to separate. Remove the sauce from the heat before adding the shredded cheese and stir gently until smooth.
Can I use pre-shredded cheese?
Yes, but freshly grated cheese usually melts more smoothly.
Can I use canned cheese soup?
Yes. For a shortcut version, replace the homemade sauce with approximately 2 cans of condensed cheddar cheese soup mixed with ½ cup milk. The flavor and texture will be different from the homemade version.
Can I add more vegetables?
Definitely. Broccoli, corn, mushrooms, bell peppers, spinach, and green beans are all excellent additions.
Can I make this casserole without beef?
Yes. Ground turkey, ground chicken, cooked shredded chicken, or plant-based ground meat can be used instead.
Final Thoughts
This Ultimate Cheesy Ground Beef and Macaroni Casserole brings together everything you want from a comforting family dinner: tender pasta, savory ground beef, vegetables, and an irresistibly creamy homemade cheddar sauce.
It’s easy enough for a busy weeknight but satisfying enough for potlucks, family gatherings, and weekend dinners.
Prepare it ahead, freeze a batch for later, or serve it straight from the oven with a crisp green salad and warm garlic bread.
Creamy, cheesy, hearty, and wonderfully comforting—this is the kind of casserole everyone will ask you to make again.