This Cheesy Beef Spaghetti Casserole is a cozy, family-friendly dinner made with tender spaghetti, savory ground beef, rich tomato sauce, Italian herbs, and plenty of melted cheese. It has all the flavors of classic spaghetti and meat sauce, but everything is layered into a casserole dish and baked until hot, bubbly, and beautifully golden on top.
The beef sauce is cooked with onion, garlic, tomato paste, crushed tomatoes, and seasonings for a rich homemade flavor. The spaghetti is tossed with a creamy cheese mixture before being layered with the meat sauce, giving every bite a perfect combination of pasta, beef, sauce, and gooey cheese.
This casserole is ideal for busy weeknights, Sunday family dinners, potlucks, meal prep, or whenever you need an easy comfort-food dish that can feed several people. Serve it with garlic bread and a crisp green salad for a complete dinner.
Why You’ll Love This Cheesy Beef Spaghetti Casserole
This recipe takes ordinary spaghetti and turns it into an extra-comforting baked meal. Baking everything together allows the tomato sauce to soak into the pasta while the cheese melts throughout the casserole.
It is also a great make-ahead dinner. You can assemble the entire casserole earlier in the day, refrigerate it, and bake it when you are ready to eat.
Another advantage is how customizable it is. Add mushrooms, bell peppers, spinach, extra cheese, Italian sausage, or red pepper flakes depending on your family’s preferences.
And because the recipe makes a generous amount, leftovers are excellent for lunch or dinner the next day.
Ingredients
For the Beef Sauce
- 1 1/2 pounds ground beef
- 1 tablespoon olive oil
- 1 medium yellow onion, finely diced
- 4 garlic cloves, minced
- 2 tablespoons tomato paste
- 1 can, 28 ounces, crushed tomatoes
- 1 can, 15 ounces, tomato sauce
- 1 teaspoon Worcestershire sauce
- 1 teaspoon Italian seasoning
- 1 teaspoon dried oregano
- 1 teaspoon dried basil
- 1 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 3/4 teaspoon salt
- 1/2 teaspoon freshly ground black pepper
- 1/4 teaspoon crushed red pepper flakes, optional
For the Spaghetti
- 16 ounces spaghetti
- Salt for the pasta water
- 1 tablespoon butter
For the Creamy Cheese Layer
- 8 ounces cream cheese, softened
- 1/2 cup sour cream
- 1/2 cup freshly grated Parmesan cheese
- 1 teaspoon Italian seasoning
- 1/4 teaspoon black pepper
For the Cheese Topping
- 2 cups shredded mozzarella cheese
- 1 cup shredded cheddar cheese
- 1/2 cup freshly grated Parmesan cheese
For Garnishing
- 2 tablespoons chopped fresh parsley
- Fresh basil, optional
- Freshly cracked black pepper
How to Make Cheesy Beef Spaghetti Casserole
1. Preheat the Oven
Preheat your oven to 375°F.
Lightly grease a 9×13-inch baking dish with cooking spray or a thin layer of butter.
Set it aside while you prepare the beef sauce and pasta.
2. Brown the Ground Beef
Heat the olive oil in a large skillet over medium-high heat.
Add the ground beef.
Cook for approximately 6 to 8 minutes, breaking the meat into small pieces with a wooden spoon or spatula.
Allow some of the beef to brown against the skillet instead of constantly stirring. Those caramelized pieces add more savory flavor.
Drain excess grease if necessary.
3. Add the Onion and Garlic
Add the diced onion to the browned beef.
Cook for approximately 3 to 4 minutes, stirring occasionally, until the onion becomes soft and translucent.
Add the minced garlic and cook for another 30 seconds.
The garlic should become fragrant without turning dark brown.
4. Add the Tomato Paste
Stir in the tomato paste.
Cook for approximately 1 minute.
Briefly caramelizing the tomato paste helps deepen its flavor and removes some of its raw acidity.
5. Make the Beef Tomato Sauce
Add the crushed tomatoes and tomato sauce.
Stir in Worcestershire sauce, Italian seasoning, oregano, basil, garlic powder, onion powder, salt, black pepper, and optional red pepper flakes.
Bring the mixture to a gentle simmer.
Reduce the heat to medium-low and cook uncovered for approximately 10 to 15 minutes, stirring occasionally.
The sauce should become slightly thicker and richer.
6. Cook the Spaghetti
While the beef sauce simmers, bring a large pot of salted water to a boil.
Add the spaghetti and cook it about 1 to 2 minutes less than the package directions.
The pasta should be slightly firmer than normal because it will continue cooking in the oven.
Drain thoroughly.
Do not rinse the spaghetti.
Toss with 1 tablespoon butter to prevent sticking.
7. Make the Creamy Cheese Mixture
In a medium bowl, combine the softened cream cheese, sour cream, Parmesan, Italian seasoning, and black pepper.
Mix until smooth.
The cream cheese should be softened so it blends easily with the hot pasta.
8. Coat the Spaghetti
Place the warm spaghetti in a large mixing bowl.
Add the cream cheese mixture.
Toss gently until the noodles are evenly coated.
If the mixture seems too thick, add a tablespoon or two of warm pasta water.
This creamy layer gives the finished casserole a richer texture and prevents the pasta from becoming dry during baking.
9. Assemble the First Layer
Spread approximately half of the creamy spaghetti mixture across the bottom of the prepared baking dish.
Top with half of the beef tomato sauce.
Sprinkle approximately one-third of the mozzarella and cheddar over the sauce.
10. Add the Remaining Layers
Spread the remaining spaghetti over the cheese.
Spoon the remaining beef sauce evenly over the pasta.
Finish with the remaining mozzarella, cheddar, and Parmesan.
Make sure the cheese reaches the edges so every portion gets plenty of melted topping.
11. Bake the Casserole
Cover the baking dish loosely with aluminum foil.
Bake at 375°F for 20 minutes.
Remove the foil and continue baking for another 10 to 15 minutes.
The casserole should be hot and bubbling around the edges, and the cheese should be completely melted.
12. Broil for a Golden Top
For an extra-golden cheese topping, switch the oven to broil.
Broil for approximately 1 to 2 minutes.
Watch closely because cheese can go from golden to burnt very quickly.
13. Rest Before Serving
Remove the casserole from the oven.
Allow it to rest for approximately 10 minutes before slicing or scooping.
This short resting period allows the layers to settle and makes the casserole easier to serve.
14. Garnish and Serve
Sprinkle the top with chopped fresh parsley.
Add fresh basil, extra Parmesan, and cracked black pepper if desired.
Serve warm.
What to Serve With Cheesy Beef Spaghetti Casserole
Garlic bread is one of the best sides for this casserole. The crisp buttery bread is perfect for soaking up the rich tomato sauce.
A fresh green salad with Italian dressing or lemon vinaigrette helps balance the richness of the beef and cheese.
You can also serve roasted broccoli, green beans, asparagus, zucchini, or Brussels sprouts on the side.
For a larger family dinner, add warm dinner rolls or a simple Caesar salad.
Tips for the Best Spaghetti Casserole
Do not overcook the pasta. Slightly undercooked spaghetti holds its texture better during baking.
Drain excess beef fat. Too much grease can make the casserole heavy.
Let the sauce simmer. A thicker sauce prevents a watery casserole.
Soften the cream cheese. It mixes more evenly into the pasta.
Use freshly grated Parmesan. It melts better and gives the casserole a stronger cheese flavor.
Rest before serving. The layers will hold together better after about 10 minutes.
Cover for the first part of baking. This keeps the cheese from browning before the center becomes hot.
Easy Recipe Variations
Cheesy Beef and Mushroom Spaghetti Casserole
Add 8 ounces sliced mushrooms after cooking the onions.
Cook until the mushrooms are golden before adding the garlic.
Beef and Bell Pepper Spaghetti Casserole
Add one diced red or green bell pepper with the onion.
It adds sweetness and extra color.
Beef and Sausage Casserole
Replace 1/2 pound of the ground beef with mild Italian sausage.
This gives the sauce an even richer flavor.
Spinach Beef Spaghetti Casserole
Stir 2 cups fresh spinach into the beef sauce during the final few minutes.
Cook until just wilted.
Extra Cheesy Spaghetti Bake
Increase the mozzarella to 3 cups and add shredded provolone or Monterey Jack.
Spicy Beef Spaghetti Casserole
Increase the crushed red pepper flakes or add a pinch of cayenne.
Can I Make This Casserole Ahead of Time?
Yes.
Assemble the casserole completely but do not bake it.
Cover tightly and refrigerate for up to 24 hours.
When ready to cook, allow it to sit at room temperature while the oven preheats.
Bake covered for about 25 to 30 minutes, then uncover and continue baking until hot and bubbly.
Because the casserole starts cold, it may require an additional 5 to 10 minutes.
Storage and Reheating
Store leftovers in an airtight container in the refrigerator for up to 3 to 4 days.
Reheat individual servings in the microwave until hot.
For larger portions, cover with foil and reheat in a 350°F oven for approximately 15 to 20 minutes.
If the pasta seems dry, spoon a little tomato sauce over the top before reheating.
Can You Freeze Cheesy Beef Spaghetti Casserole?
Yes.
You can freeze the casserole before or after baking.
Wrap the dish tightly with plastic wrap followed by aluminum foil.
Freeze for up to 2 to 3 months.
For best results, thaw overnight in the refrigerator before baking or reheating.
If freezing individual leftovers, use airtight freezer containers for easier portions.
Frequently Asked Questions
Can I use another pasta shape?
Absolutely. Penne, rigatoni, ziti, or rotini all work well.
Can I leave out the cream cheese?
Yes. You can simply toss the spaghetti with part of the beef sauce before layering.
Can I use ground turkey?
Yes. Ground turkey can replace the beef. Cook ground poultry to an internal temperature of 165°F.
Why is my spaghetti casserole watery?
The tomato sauce may not have simmered long enough, or the pasta may not have been drained thoroughly.
What cheese works best?
Mozzarella provides excellent melt, cheddar adds sharper flavor, and Parmesan adds salty richness. Using all three gives the casserole the best combination.
Final Thoughts
This Cheesy Beef Spaghetti Casserole combines tender spaghetti, rich homemade beef sauce, creamy cheese filling, and layers of melted mozzarella, cheddar, and Parmesan into one satisfying baked dinner.
It has all the familiar flavors of spaghetti and meat sauce with the added comfort of a bubbling cheese-topped casserole. The creamy pasta layer keeps everything moist while the golden cheese topping gives every serving an irresistible finish.