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Delicious Italian sausage casserole with peppers and herbs in a baking dish

Italian Sausage & Pepper Casserole

A one-pan Italian dish filled with Italian sausage, colorful bell peppers, and melted mozzarella, perfect for busy weeknights or family gatherings.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 servings
Course: Dinner, Main Course
Cuisine: Italian
Calories: 350
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 1 pound Italian sausage Choose mild or spicy based on preference
  • 2 pieces bell peppers, sliced (red and green) Adds color and flavor
  • 1 piece onion, chopped Any variety is fine
  • 3 cloves garlic, minced For extra flavor
  • 1 can (14.5 oz) diced tomatoes Add extra juice for moisture
  • 1 can (8 oz) tomato sauce For a rich sauce
  • 1 teaspoon Italian seasoning For classic Italian flavor
  • to taste none Salt and pepper Adjust according to preference
  • 1 cup shredded mozzarella cheese Can substitute with provolone or fontina

Method
 

Preparation
  1. Preheat the oven to 375°F (190°C).
  2. In a large skillet, cook the Italian sausage over medium heat until browned.
  3. Add the sliced bell peppers, onion, and garlic to the skillet. Sauté until the vegetables are tender.
  4. Stir in the diced tomatoes, tomato sauce, Italian seasoning, salt, and pepper.
  5. Transfer the mixture to a casserole dish and top with shredded mozzarella cheese.
  6. Bake in the preheated oven for 25-30 minutes, or until the cheese is bubbly and golden.
  7. Let it cool for a few minutes before serving.

Notes

For variations, try chicken sausage or plant-based options. Serve with crusty bread or a fresh salad. Leftovers keep well in the fridge for 3-4 days or can be frozen for 2-3 months.