Easy Pizza Casserole Recipe: Cheesy, Loaded

This easy pizza casserole recipe is the perfect way to turn all your favorite pizza toppings into a hearty, baked pasta dish. It combines penne pasta with savory ground beef, pepperoni, mushrooms, and gooey melted cheese, creating a casserole that’s loaded with flavor in every single bite. 

Made with simple pantry ingredients, it is a delicious, family-friendly alternative to ordering delivery on a busy night. If you are looking for a quick, crowd-pleasing dinner that takes minimal effort, let’s get right into it.

Why You Will Love This Recipe

If you’ve been stuck ordering the same pizza delivery every week, you are going to fall in love with this method. This pizza casserole is:

Texturally perfect: Tender pasta, saucy layers, and a thick blanket of melted cheese create a dish that pulls apart in cheesy, satisfying strings.

Highly customizable: You can easily swap in your favorite pizza toppings, like sausage, olives, or bell peppers, to make it your own.

Made with basic staples: You only need pasta, ground beef, marinara sauce, pepperoni, and shredded cheese to bring this dish together.

Great for feeding a crowd: This casserole-style dish is perfect for family dinners, potlucks, or meal prep throughout the week.

Ingredients You Will Need

The beauty of this recipe lies in its sheer simplicity. To get that perfect cheesy, loaded flavor, you will need:

• 12 oz penne or rigatoni pasta
• 1 pound ground beef or Italian sausage
• 1/2 onion, diced
• 2 cloves garlic, minced
• 1 jar (24 oz) marinara or pizza sauce
• 1/2 cup mushrooms, sliced
• 1/4 cup diced red bell pepper
• 1/4 cup diced red onion
• 1 teaspoon Italian seasoning
• 2 1/2 cups shredded mozzarella cheese
• 1 cup sliced pepperoni
• Fresh basil or parsley, chopped, for garnish

Step-by-Step Instructions for Pizza Casserole

Follow these easy steps. I’ve broken them down into quick, simple pieces so you can achieve maximum flavor without any stress.

Step 1: Cook the Pasta Bring a large pot of salted water to a boil. Cook the pasta according to package directions until al dente, then drain.

Step 2: Brown the Meat While the pasta cooks, heat a skillet over medium-high heat. Add the ground beef or sausage along with the diced onion, cooking until browned. Drain any excess fat.

Step 3: Add the Garlic and Sauce Stir in the minced garlic and cook for 30 seconds. Pour in the marinara sauce and Italian seasoning, letting it simmer for 5 minutes.

Step 4: Preheat and Prep the Baking Dish Preheat your oven to 375°F and grease a 9×13-inch baking dish.

Step 5: Combine the Pasta and Sauce Toss the cooked pasta with the meat sauce, then pour half of the mixture into the prepared baking dish.

Step 6: Add the Toppings Layer the mushrooms, diced bell pepper, and red onion over the pasta. Sprinkle half of the shredded mozzarella.

Step 7: Add the Remaining Layers Top with the remaining pasta mixture, followed by the rest of the mozzarella cheese and the sliced pepperoni.

Step 8: Bake Until Golden Bake for 20 to 25 minutes, until the cheese is melted, bubbly, and lightly golden, and the pepperoni edges are slightly crisp.

Step 9: Garnish and Serve Let the casserole rest for 5 minutes before serving. Garnish with fresh basil or parsley.

Pro Tips for the Ultimate Casserole

Small adjustments can take your pizza casserole from good to absolute perfection.

Don’t overcook the pasta: Cooking the pasta slightly under al dente helps prevent it from becoming mushy after baking in the oven.

Layer the cheese generously: Adding cheese both in the middle layer and on top creates that classic gooey, pull-apart texture in every bite.

Customize your toppings: Treat this dish like a pizza, adding whatever toppings your family loves most for a personalized casserole every time.

What to Serve with Pizza Casserole

This cheesy, loaded dish pairs beautifully with a variety of simple sides.

As a main course: Serve with garlic bread and a side salad for a complete, comforting Italian-inspired meal.

As a potluck dish: This casserole travels well and reheats easily, making it a great option for potlucks or family gatherings.

Loaded style: Add extra toppings like black olives, banana peppers, or crumbled Italian sausage for even more flavor.

How to Store Pizza Casserole

Have leftovers? It is easy to save for later.

In the Fridge: Store in an airtight container for up to 4 days.

In the Freezer: This casserole freezes well either before or after baking. Wrap tightly and freeze for up to 3 months, thawing overnight in the fridge before baking or reheating.

How to Reheat: Warm individual portions in the microwave, or reheat the full dish covered in the oven at 350°F until heated through.

Frequently Asked Questions

Can I assemble this casserole ahead of time? Yes, you can assemble the entire dish up to a day in advance, cover, and refrigerate until ready to bake.

Can I use a different pasta shape? Yes, rotini, ziti, or shells all work well as substitutes for penne or rigatoni.

Can I make this dish vegetarian? Yes, simply omit the meat and load up on extra vegetables and plant-based pepperoni for a vegetarian-friendly version.

Final Thoughts

This easy pizza casserole recipe is proof that all your favorite pizza flavors can be transformed into a comforting, baked pasta dish. With layers of saucy noodles, melty cheese, and classic pizza toppings, you get a rich, satisfying dinner every single time. Try it today, and it just might become a regular favorite for family dinners and potlucks alike.