Loaded Pizza Spaghetti Bake combines two family favorites—pizza and spaghetti—into one incredibly cheesy, hearty casserole. Tender spaghetti noodles are coated in a rich blend of pasta sauce and pizza sauce, tossed with seasoned ground beef, crispy bacon, pepperoni, and vegetables, then topped with plenty of gooey mozzarella cheese before being baked to golden perfection.
This easy weeknight dinner is packed with classic pizza flavors while offering the comforting texture of baked pasta. Whether you’re feeding a hungry family, preparing a potluck dish, or looking for a meal that makes excellent leftovers, this recipe is guaranteed to become a regular favorite.
With every forkful delivering cheesy goodness, savory meat, and delicious pizza toppings, Loaded Pizza Spaghetti Bake is the ultimate comfort food everyone will love.
What Is Loaded Pizza Spaghetti Bake?
Loaded Pizza Spaghetti Bake is a baked pasta casserole that combines cooked spaghetti with seasoned ground beef, pizza sauce, pasta sauce, mozzarella cheese, pepperoni, bacon, mushrooms, onions, and black olives. After everything is mixed together, the casserole is baked until the cheese is melted and lightly browned.
The result is a hearty meal that tastes like pizza while satisfying every pasta craving.
Why You’ll Love This Recipe
This recipe is popular because it offers:
- Easy one-pan meal
- Classic pizza flavors
- Creamy, cheesy texture
- Hearty and filling
- Family-friendly dinner
- Great for meal prep
- Perfect for potlucks
- Delicious leftovers
Every bite is loaded with meat, cheese, and pizza-inspired toppings.
Ingredients You’ll Need
Pasta
- 8 ounces spaghetti noodles
Spaghetti provides the perfect base for soaking up the rich sauce.
Meat
- 1 pound ground beef
- 1½ cups cooked bacon crumbles
- 15 pepperoni slices
These meats create bold, savory flavor throughout the casserole.
Vegetables
- ½ red onion, diced
- ¼ cup sliced mushrooms
- Black olives, sliced
These vegetables add texture and classic pizza flavor.
Sauces
- 14 ounces pizza sauce
- 24 ounces pasta sauce
The combination creates a rich, flavorful coating for every noodle.
Seasonings
- 1 teaspoon Italian seasoning
- 1 teaspoon onion powder
- 1 teaspoon garlic powder
- 1 teaspoon seasoned salt
Simple seasonings bring all the ingredients together.
Cheese
- 2 cups shredded mozzarella cheese
Freshly shredded mozzarella melts beautifully into a bubbly topping.
How to Make Loaded Pizza Spaghetti Bake
Step 1: Cook the Pasta
Bring a large pot of salted water to a boil.
Cook the spaghetti according to the package directions until al dente.
Drain well and set aside.
Do not overcook, as the pasta will continue cooking in the oven.
Step 2: Brown the Beef
Place a large skillet over medium-high heat.
Add:
- Ground beef
- Diced red onion
- Sliced mushrooms
Cook until the beef is fully browned and the vegetables soften.
Drain any excess grease.
Step 3: Season the Meat
Stir in:
- Italian seasoning
- Onion powder
- Garlic powder
- Seasoned salt
Cook for another minute to allow the spices to become fragrant.
Step 4: Add the Sauces
Add:
- Pizza sauce
- Pasta sauce
Stir well.
Mix in:
- A few pepperoni slices
- Most of the bacon crumbles
Allow the mixture to simmer gently for several minutes.
The flavors will blend into a rich pizza-inspired sauce.
Step 5: Combine with the Pasta
Add the cooked spaghetti directly into the skillet.
Toss until every strand of pasta is evenly coated with the meat sauce.
Step 6: Assemble the Bake
Transfer the spaghetti mixture to a lightly greased baking dish if your skillet is not oven-safe.
Sprinkle the shredded mozzarella evenly over the top.
Add the remaining:
- Bacon crumbles
- Pepperoni slices
- Red onion
- Black olives
The toppings create the look and flavor of a loaded pizza.
Step 7: Bake
Preheat the oven to 350°F (175°C).
Bake the casserole for 10 minutes until the cheese is melted.
Switch the oven to broil.
Broil for 2 to 3 minutes until the cheese becomes bubbly and lightly browned.
Watch carefully to prevent burning.
Step 8: Serve
Allow the casserole to rest for about 5 minutes.
Serve warm with your favorite side dishes.
Tips for the Best Loaded Pizza Spaghetti Bake
Cook Pasta Al Dente
Slightly firm pasta prevents a mushy casserole.
Freshly Grate the Cheese
Fresh mozzarella melts much better than pre-shredded varieties.
Simmer the Sauce
A short simmer helps develop deeper pizza flavor.
Let It Rest
Allowing the casserole to cool slightly makes serving much easier.
Delicious Variations
Supreme Pizza Pasta
Add green peppers, sausage, and extra mushrooms.
Meat Lovers Version
Include Italian sausage, ham, and extra pepperoni.
Spicy Pizza Bake
Add crushed red pepper flakes and sliced jalapeños.
Hawaiian Pizza Pasta
Mix in pineapple chunks and diced ham.
Veggie Pizza Bake
Use spinach, bell peppers, olives, mushrooms, and onions without the meat.
What to Serve with Loaded Pizza Spaghetti Bake
Complete your meal with:
Bread
- Garlic bread
- Breadsticks
- Cheesy garlic knots
Salads
- Caesar salad
- Garden salad
- Italian chopped salad
Vegetables
- Roasted broccoli
- Green beans
- Garlic roasted zucchini
These sides balance the rich flavors of the casserole.
Common Mistakes to Avoid
Overcooking the Pasta
Cook only until al dente before baking.
Skipping the Broil
Broiling gives the cheese a beautiful golden finish.
Using Too Much Sauce
Excess sauce can make the casserole watery.
Forgetting to Drain the Beef
Removing excess grease keeps the casserole rich without becoming oily.
Storage Instructions
Store leftovers in an airtight container in the refrigerator for up to 4 days.
How to Reheat
Oven Method
Cover with foil and bake at 350°F for about 20 minutes.
Microwave Method
Heat individual portions for 1 to 2 minutes.
Air Fryer Method
Reheat at 350°F for about 5 minutes.
Can You Freeze Loaded Pizza Spaghetti Bake?
Yes.
Allow the casserole to cool completely.
Wrap tightly with plastic wrap and aluminum foil.
Freeze for up to 3 months.
Thaw overnight in the refrigerator before reheating.
Nutritional Information
Approximate values per serving:
- Calories: 520–640
- Protein: 30g
- Carbohydrates: 40g
- Fat: 28g
- Fiber: 3g
Nutritional values vary depending on the ingredients used.
Frequently Asked Questions
Can I use another pasta shape?
Yes. Penne, rotini, rigatoni, or ziti all work well.
Can I prepare this ahead of time?
Absolutely. Assemble the casserole, refrigerate, and bake just before serving.
What cheeses work well?
Mozzarella, provolone, cheddar, Monterey Jack, or an Italian cheese blend all melt beautifully.
Can I make it spicy?
Yes. Add jalapeños, spicy sausage, or crushed red pepper flakes.
Can I add more vegetables?
Definitely. Bell peppers, spinach, mushrooms, zucchini, and olives all complement the pizza flavors.
What toppings can I customize?
You can use your favorite pizza toppings, including sausage, ham, green peppers, onions, banana peppers, mushrooms, olives, or extra cheese.
Conclusion
Loaded Pizza Spaghetti Bake combines everything you love about pizza and pasta into one irresistible baked casserole. With tender spaghetti, seasoned ground beef, smoky bacon, pepperoni, rich pizza sauce, gooey mozzarella, and classic pizza toppings, every bite is packed with comforting flavor.
Easy enough for busy weeknights yet satisfying enough for parties and family gatherings, this Loaded Pizza Spaghetti Bake is a guaranteed crowd-pleaser that will quickly earn a permanent spot in your dinner rotation.