This Better Than Pizza Sheet Pan Casserole is a weeknight game-changer, bringing all your favorite pizza flavors into a hearty, one-pan dinner. With a crispy base, savory toppings, and gooey cheese, it satisfies pizza cravings while being easier, more filling, and packed with vegetables. Perfect for feeding a family or a hungry crowd, this casserole is endlessly adaptable and comes together with minimal fuss.
Ingredients
- 2 cups uncooked rotini or penne pasta
- 1 tablespoon olive oil
- 1 pound Italian sausage (mild or hot), casings removed
- 1 medium yellow onion, diced
- 1 red bell pepper, diced
- 1 green bell pepper, diced
- 8 ounces cremini or white mushrooms, sliced
- 3 cloves garlic, minced
- 1 teaspoon dried oregano
- 1 teaspoon dried basil
- 1/2 teaspoon crushed red pepper flakes (optional)
- 1 (24-ounce) jar marinara sauce
- 1/2 cup sliced black olives
- 1/2 cup sliced pepperoni (about 2 ounces)
- 2 cups shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 1/4 cup chopped fresh parsley or basil (for garnish)
- Nonstick cooking spray
- Salt and black pepper, to taste
Instructions
- Preheat your oven to 425°F (220°C). Spray a large rimmed sheet pan (about 13×18 inches) with nonstick cooking spray.
- Cook the pasta. Bring a large pot of salted water to a boil. Cook rotini or penne for 2 minutes less than package directions (usually about 7 minutes), so it’s very al dente. Drain and toss with 1 tablespoon olive oil to prevent sticking. Set aside.
- Brown the sausage. In a large skillet over medium heat, cook Italian sausage, breaking it up with a spoon, until browned and cooked through (about 6-8 minutes). Use a slotted spoon to transfer sausage to a plate, leaving the fat in the skillet.
- Sauté vegetables. Add onion, bell peppers, and mushrooms to the skillet. Cook, stirring occasionally, until softened and golden (about 6 minutes). Stir in garlic, oregano, basil, and red pepper flakes, and cook for 1 minute more.
- Combine pasta and sauce. In a large mixing bowl, toss the cooked pasta with the marinara sauce until evenly coated. Fold in the cooked sausage and sautéed vegetables. Season with salt and black pepper to taste.
- Assemble on the sheet pan. Spread the pasta mixture evenly over the prepared sheet pan. Evenly sprinkle black olives and pepperoni slices over the top.
- Add cheese. Sprinkle shredded mozzarella and Parmesan evenly over the casserole.
- Bake. Place sheet pan in preheated oven and bake for 18-22 minutes, or until cheese is bubbling and starting to brown at the edges.
- Broil (optional). For a golden, bubbly top, broil on high for 2-3 minutes, watching closely to avoid burning.
- Garnish and serve. Let casserole cool for 5 minutes. Sprinkle with chopped fresh parsley or basil. Slice into squares and serve hot.
Tips
- Substitutions: Swap Italian sausage for ground turkey, chicken, or a plant-based sausage to suit your dietary needs. Any short pasta (ziti, fusilli, rigatoni) works well.
- Vegetable Boost: Add spinach, zucchini, or roasted eggplant for extra nutrition and flavor. Just sauté before adding to the casserole.
- Cheese Choices: Try provolone, fontina, or a pizza-blend cheese for a different flavor profile.
- Make Ahead: Assemble the casserole up to the cheese layer, cover, and refrigerate for up to 24 hours before baking. Add 5-10 minutes to baking time if starting from cold.
Serving Suggestions
- Salad: Serve with a crisp Caesar salad or a simple green salad dressed with balsamic vinaigrette to balance the richness.
- Bread: Pair with garlic bread or warm focaccia to soak up any extra sauce.
- Vegetable Sides: Roasted broccoli, green beans, or a medley of grilled vegetables complement the casserole well.
- For Kids: Offer a side of carrot sticks or cucumber slices for a refreshing crunch.
Variations
- Veggie Lovers: Omit sausage and pepperoni; add roasted zucchini, artichoke hearts, sun-dried tomatoes, and extra mushrooms for a vegetarian version.
- Meat Lovers: Add diced ham, bacon, or even cooked chicken along with sausage and pepperoni for a protein-packed twist.
- BBQ Chicken: Use shredded cooked chicken, swap marinara for BBQ sauce, and top with red onions and cilantro for a barbecue-inspired bake.
- White Pizza: Instead of marinara, use a mixture of ricotta and Alfredo sauce, and top with spinach, mozzarella, and a sprinkle of nutmeg.
Storage and Reheating
- Refrigerator: Store cooled leftovers in an airtight container for up to 4 days. For best texture, keep toppings and cheese layers intact.
- Freezer: Wrap individual portions tightly in foil and then plastic wrap; freeze for up to 2 months. Thaw overnight in the refrigerator before reheating.
- Reheating: To reheat, place servings on a baking sheet, cover with foil, and bake at 350°F (175°C) for 15-20 minutes, or until heated through. For a crispy top, uncover and broil for 2 minutes at the end. Microwave reheating works in a pinch (2-3 minutes per serving), but the oven preserves texture best.
Frequently Asked Questions
- Can I make this casserole gluten-free?
Yes, simply substitute your favorite gluten-free pasta and ensure your marinara sauce and toppings are gluten-free. Bake as directed, checking pasta for doneness as some gluten-free varieties cook differently. - How do I prevent the casserole from drying out?
Undercook the pasta slightly so it absorbs some sauce in the oven without becoming mushy. Don’t skimp on sauce, and cover loosely with foil for the first 10 minutes of baking if your oven tends to run hot or if reheating leftovers. - Can I double the recipe for a crowd?
Yes! Use two sheet pans and rotate them halfway through baking for even cooking. This recipe scales easily for parties or potlucks. - What’s the best way to add more vegetables?
You can add up to 2 additional cups of chopped vegetables (like spinach, zucchini, or broccoli florets). Sauté them briefly before adding to prevent excess moisture in the casserole. - Can I assemble this ahead of time?
Absolutely. Assemble up to the cheese layer, cover tightly, and refrigerate for up to 24 hours. Add a few minutes to the bake time to ensure it’s heated through. - Is this recipe kid-friendly?
Very much so! You can tailor toppings to your family’s preferences (omit olives or pepperoni if desired), and the familiar pizza flavors make it a hit with picky eaters.
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Better Than Pizza Sheet Pan Casserole: Easy Family Dinner