Ingredients

1. Olive Oil

Quantity: 2 teaspoons
Role in the Dish: Olive oil is used to sauté the sausage and vegetables at the beginning of the recipe. It provides a bit of richness and helps everything cook evenly without sticking to the pan.

2. Mild Italian Sausage

Quantity: 1 lb (casings removed)
Role in the Dish: Sausage is a classic pizza topping that adds both flavor and protein to the casserole. Mild Italian sausage brings a rich, herby flavor that complements the marinara sauce and other ingredients perfectly. You could also use spicy sausage if you prefer a bit more heat.

3. Onion

Quantity: 1/2 cup (finely diced)
Role in the Dish: Onion adds sweetness and depth to the casserole. When sautéed, it softens and becomes caramelized, contributing to the overall flavor profile of the dish.

4. Green Bell Pepper

Quantity: 1/2 cup (diced)
Role in the Dish: Green bell pepper adds a bit of freshness and crunch, balancing out the richness of the sausage and cheese. Its slightly bitter flavor contrasts well with the sweet marinara sauce.

5. Mushrooms

Quantity: 1 cup (sliced)
Role in the Dish: Mushrooms add an earthy depth to the casserole. They also absorb the flavors of the other ingredients and provide a nice contrast in texture.

6. Mini Pepperoni

Quantity: 3/4 cup (divided use)
Role in the Dish: Mini pepperoni is a fun addition to this casserole, providing that classic pizza flavor in every bite. The little pepperoni slices crisp up beautifully in the oven, adding texture and a burst of savory flavor.

7. Black Olives

Quantity: 1/2 cup (sliced)
Role in the Dish: Black olives are a common pizza topping, adding a salty, briny flavor that complements the other ingredients. They also bring a bit of tang to the dish, cutting through the richness of the sausage and cheese.

8. Garlic

Quantity: 1 teaspoon (minced)
Role in the Dish: Garlic enhances the overall flavor profile with its savory, aromatic punch. It works well with the sausage and vegetables, infusing the casserole with an irresistible fragrance as it cooks.

9. Marinara Sauce

Quantity: 24 ounces (jarred)
Role in the Dish: Marinara sauce is the base of the casserole’s flavor. It adds the classic tomato sauce tang that is synonymous with pizza, along with a touch of sweetness from the tomatoes.

10. Water

Quantity: 3 1/4 cups
Role in the Dish: Water helps to thin out the marinara sauce and create enough liquid for the pasta to cook in. As the casserole bakes, the water absorbs into the pasta, creating a comforting, saucy texture.

11. Salt and Pepper

Quantity: To taste
Role in the Dish: These basic seasonings are essential for enhancing the natural flavors of the dish. Salt balances the sweetness of the sauce and brings out the umami in the sausage, while pepper adds a mild heat to the overall flavor.

12. Short Pasta (Corkscrew, Rotini, Penne, etc.)

Quantity: 12 ounces
Role in the Dish: The pasta acts as the base of the casserole, soaking up the marinara sauce and all the savory flavors. Short pasta shapes, like rotini or penne, are ideal because they hold onto the sauce better, ensuring every bite is packed with flavor.

13. Shredded Mozzarella Cheese

Quantity: 1 1/2 cups
Role in the Dish: Mozzarella cheese is the key ingredient that creates that gooey, melty topping that everyone loves. It binds the casserole together and gives it a cheesy, indulgent finish.

14. Parsley

Quantity: 1 tablespoon (chopped)
Role in the Dish: Parsley is a garnish that adds a touch of color and freshness to the finished casserole. It balances the richness of the cheese and sausage and adds a slight herbal note.

15. Cooking Spray

Quantity: For greasing the baking dish
Role in the Dish: Cooking spray is used to prevent the casserole from sticking to the baking dish. It ensures that when you’re ready to serve, the casserole comes out in one beautiful, intact piece.

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Instructions

1. Prepare the Sausage and Vegetables

Heat the olive oil in a large, deep pot over medium heat. Olive oil not only prevents the ingredients from sticking, but it also provides a rich base for the sausage and vegetables to cook in.
Add the mild Italian sausage to the pot. Use a spatula to break it up into smaller pieces as it cooks. Sauté the sausage for about 4-5 minutes, until it’s nicely browned. The sausage will release its fat and become slightly crispy, adding a delicious flavor to the base of the casserole.
Once the sausage is browned, add the diced onion, green bell pepper, and sliced mushrooms. Stir the mixture occasionally and cook for 5-6 minutes, or until the vegetables are tender and softened. The onions will caramelize and turn a golden brown, adding a sweet, rich flavor that contrasts with the savory sausage.

2. Add Pepperoni, Olives, and Garlic

Add 1/2 cup of mini pepperoni to the pot, along with the black olives and minced garlic. Continue to sauté for 1 more minute. The garlic will release its aromatic oils and infuse the sausage and vegetables with its savory goodness. The pepperoni will start to crisp up, releasing its oils and flavor into the mixture, creating an incredibly fragrant base for the casserole.

3. Stir in the Marinara Sauce, Water, and Pasta

Add the marinara sauce, water, salt, pepper, and pasta to the pot. Stir everything together so the pasta is evenly coated with the sauce. The water will help the pasta cook and absorb the flavors of the sauce as it simmers.
Bring the mixture to a gentle simmer, then cover the pot. Let it cook over low heat for about 12-14 minutes, or until the pasta is tender and has absorbed most of the liquid. Stir occasionally to ensure that the pasta doesn’t stick to the bottom of the pot. The pasta will become soft and the sauce will thicken slightly, creating a deliciously flavorful base for the casserole.

4. Preheat the Oven and Prepare the Baking Dish

While the pasta is simmering, preheat your oven to 400 degrees Fahrenheit. This high temperature will help melt and brown the cheese on top, creating a bubbly, golden crust.
Coat a 3-quart baking dish with cooking spray. This ensures the casserole will slide out easily after baking and keeps everything from sticking to the sides.

5. Assemble the Casserole

Once the pasta is finished cooking, pour the entire mixture into the prepared baking dish. The pasta should be evenly distributed with the sausage, vegetables, pepperoni, and sauce throughout.
Sprinkle the shredded mozzarella cheese evenly over the top of the casserole. The cheese will melt and create a gooey, cheesy topping that binds all the flavors together.
Arrange the remaining 1/4 cup of mini pepperoni on top of the cheese. This will add a nice texture contrast, with the pepperoni crisping up as it bakes in the oven.

6. Bake the Casserole

Place the baking dish in the preheated oven and bake for 10-15 minutes, or until the cheese is fully melted and bubbly. You can also broil the casserole for 1-2 minutes at the end to get a crispy, golden-brown top. The cheese should have a slight golden hue, and the casserole will be hot and bubbly.

7. Garnish and Serve

Once the casserole is done, remove it from the oven and let it cool for a few minutes. Sprinkle the chopped parsley over the top for a pop of color and freshness.
Serve the pizza casserole hot, and enjoy the cheesy, savory goodness with your family or guests.

Notes

Substitute the Sausage: If you’re not a fan of sausage, you can easily swap it for ground beef, turkey, or chicken. For a vegetarian version, use plant-based sausage or skip the meat entirely and add more vegetables.
Pasta Variations: While this recipe calls for short pasta like corkscrew, rotini, or penne, feel free to use whatever pasta shape you prefer. Rigatoni, fusilli, or farfalle would also work well.
Add Extra Toppings: Customize the casserole with your favorite pizza toppings. Try adding sliced pepperoncini for some heat, or diced tomatoes for extra freshness. You can also top the casserole with fresh basil before serving for an added pop of flavor.
Cheese Variations: While mozzarella is the classic choice, you can experiment with other cheeses like provolone, cheddar, or even a blend of Italian cheeses. Adding some parmesan on top will give the casserole a delicious, slightly salty kick.
Spicy Twist: If you like things spicy, add a pinch of red pepper flakes to the sauce or use spicy sausage instead of mild Italian sausage.

Author: Rosa
Prep Time: 10 minutes,
Cook Time: 25 minutes