Italian Sausage and Pepper Casserole is a comforting dish that’s perfect for any occasion. With its flavorful ingredients, this casserole brings together juicy Italian sausage, colorful bell peppers, and melted mozzarella cheese, creating a delicious meal that the whole family will love. It’s easy to make and serves as a hearty main course that pairs well with a simple salad or crusty bread.

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Why Make This Recipe
This recipe is not only simple to prepare but also packed with flavor. The combination of Italian sausage and fresh vegetables provides a satisfying meal that is both healthy and delicious. It’s an excellent choice for busy weeknights or for feeding a crowd. Plus, it’s a one-dish meal, which means less cleanup for you!
How to Make Italian Sausage and Pepper Casserole
Making this scrumptious casserole is straightforward. Follow the simple steps below to create a delicious dish that your family will ask for again and again.
Ingredients:
- 1 pound Italian sausage
- 1 onion, diced
- 1 red bell pepper, sliced
- 1 green bell pepper, sliced
- 1 yellow bell pepper, sliced
- 2 cloves garlic, minced
- 1 can diced tomatoes
- 1 cup shredded mozzarella cheese
- Salt and pepper to taste
Directions:
- Preheat your oven to 375°F (190°C).
- In a large skillet, cook the Italian sausage over medium heat until browned. Remove from skillet and drain excess fat.
- In the same skillet, add the diced onion and garlic; sauté until the onion is translucent.
- Add the sliced bell peppers and cook until tender.
- Return the sausage to the skillet and stir in the can of diced tomatoes. Season with salt and pepper.
- Pour the mixture into a casserole dish and sprinkle mozzarella cheese on top.
- Bake in the preheated oven for 20-25 minutes or until the cheese is melted and bubbly.
- Serve hot.
How to Serve Italian Sausage and Pepper Casserole
Serve this casserole warm, directly from the oven. It can be enjoyed on its own or paired with a side salad or garlic bread for a complete meal. The vibrant colors of the peppers and the melted cheese make for an appealing presentation.
How to Store Italian Sausage and Pepper Casserole
If you have leftovers, store the casserole in an airtight container in the refrigerator. It will stay fresh for about 3-4 days. To reheat, simply warm it in the oven or microwave until heated through.
Tips to Make Italian Sausage and Pepper Casserole
- Use any combination of bell peppers you like. You can even try adding other vegetables.
- Feel free to spice it up by adding red pepper flakes for some heat.
- If you want a lighter version, consider using turkey sausage instead of traditional Italian sausage.
Variation
For a twist on the basic recipe, you can try adding cooked pasta to the mixture before baking. This will make a hearty pasta bake full of flavor!
FAQs
1. Can I make this casserole ahead of time?
Yes! You can prepare the casserole a day in advance. Just cover it and refrigerate, then bake it when you’re ready to serve.
2. What can I substitute for Italian sausage?
You can use turkey sausage or even a vegetarian sausage if you’re looking for a lighter or meat-free option.
3. Can I freeze Italian Sausage and Pepper Casserole?
Yes, you can freeze it before baking. Just wrap it tightly with foil or plastic wrap. When you’re ready to bake it, just thaw it in the fridge overnight and then bake as directed.
Enjoy your delicious Italian Sausage and Pepper Casserole!

Italian Sausage and Pepper Casserole
Ingredients
Main Ingredients
- 1 pound Italian sausage
- 1 medium onion, diced
- 1 each red bell pepper, sliced
- 1 each green bell pepper, sliced
- 1 each yellow bell pepper, sliced
- 2 cloves garlic, minced
- 1 can diced tomatoes
- 1 cup shredded mozzarella cheese
- Salt and pepper to taste
Instructions
Preparation
- Preheat your oven to 375°F (190°C).
- In a large skillet, cook the Italian sausage over medium heat until browned. Remove from skillet and drain excess fat.
- In the same skillet, add the diced onion and garlic; sauté until the onion is translucent.
- Add the sliced bell peppers and cook until tender.
- Return the sausage to the skillet and stir in the can of diced tomatoes. Season with salt and pepper.
- Pour the mixture into a casserole dish and sprinkle mozzarella cheese on top.
- Bake in the preheated oven for 20-25 minutes or until the cheese is melted and bubbly.
- Serve hot.