Italian Sausage and Pepper Casserole

A hearty and flavorful casserole packed with savory Italian sausage, colorful bell peppers, and melted mozzarella—perfect for a comforting family meal!

Why You’ll Love This Recipe

  • Simple & Quick – Ready in just 35 minutes.
  • Rich & Savory – Italian sausage adds deep, delicious flavors.
  • Cheesy & Comforting – Melted mozzarella makes it extra satisfying.
  • Versatile – Serve as is or with your favorite side.
  • Perfect for Meal Prep – Great for leftovers and easy to reheat.

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 (14.5 ounces)
  • 1 cup shredded mozzarella cheese
  • Salt and pepper to taste

Directions

Preheat the Oven:

  1. Set your oven to 375°F (190°C).

Cook the Sausage and Vegetables:

  1. In a large skillet over medium heat, cook the Italian sausage until browned, breaking it into crumbles.
  2. Add diced onion, sliced bell peppers, and minced garlic. Cook until the vegetables are soft, about 5 minutes.

Combine Ingredients:

  1. Stir in the diced tomatoes and season with salt and pepper.
  2. Let it simmer for 2-3 minutes.

Assemble the Casserole:

  1. Transfer the sausage and pepper mixture to a casserole dish.
  2. Sprinkle shredded mozzarella cheese evenly over the top.

Bake:

  1. Place the casserole in the preheated oven and bake for 20-25 minutes, or until the cheese is melted and bubbly.

Serve:

  1. Remove from the oven and let it cool slightly before serving.
  2. Enjoy as is or serve over rice, pasta, or crusty bread.

Servings and Timing

  • Prep Time: 10 minutes
  • Cooking Time: 25 minutes
  • Total Time: 35 minutes
  • Servings: 4 servings
  • Calories per serving: Approximately 350 kcal

Variations

  • Spicy Kick – Use hot Italian sausage or add red pepper flakes.
  • Low-Carb Option – Serve over cauliflower rice or zucchini noodles.
  • Extra Cheesy – Add Parmesan or provolone along with the mozzarella.
  • Herb-Infused – Stir in fresh basil, oregano, or thyme for added flavor.
  • Tomato-Free – Replace diced tomatoes with Alfredo sauce for a creamy twist.

Storage and Reheating

  • Refrigeration: Store in an airtight container for up to 3 days.
  • Freezing: Freeze in a sealed container for up to 2 months. Thaw overnight before reheating.
  • Reheating: Warm in the oven at 350°F (175°C) for 10 minutes or microwave in 30-second intervals.

FAQs

Can I use turkey or chicken sausage instead?

Yes! Both are great leaner options.

What can I serve this casserole with?

Rice, pasta, polenta, or crusty bread all pair well.

Can I make this ahead of time?

Yes! Assemble the casserole and refrigerate, then bake when ready.

What type of cheese works best?

Mozzarella melts beautifully, but provolone or a mix of Italian cheeses also works great.

Can I use fresh tomatoes instead of canned?

Yes, chop about 2 cups of fresh tomatoes.

How do I make this dish creamier?

Mix in a little heavy cream or cream cheese before baking.

Can I add mushrooms or zucchini?

Absolutely! They add extra flavor and texture.

How do I make it vegetarian?

Use plant-based sausage or replace it with beans.

Is this casserole gluten-free?

Yes, as long as all ingredients used are gluten-free.

Can I double the recipe for a crowd?

Yes, use a larger casserole dish and adjust baking time as needed.

Conclusion

Italian Sausage and Pepper Casserole is a hearty, flavorful, and easy-to-make dish that’s perfect for family dinners or meal prep. With its cheesy, savory goodness, it’s sure to be a crowd-pleaser. Serve it on its own or with your favorite sides for a satisfying meal!

Print
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A hearty Italian sausage and pepper casserole in a white baking dish, featuring browned sausages, colorful bell peppers, onions, and a rich tomato-based sauce, garnished with fresh parsley.

Italian Sausage and Pepper Casserole


  • Author: Chef Clara
  • Total Time: 35 minutes
  • Yield: 4 servings
  • Diet: Gluten Free

Description

For the Casserole:

  • 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 (14.5 ounces)
  • 1 cup shredded mozzarella cheese
  • Salt and pepper to taste

Ingredients

Preheat the Oven:

  • Set your oven to 375°F (190°C).

2. Cook the Sausage and Vegetables:

  • In a large skillet over medium heat, cook the Italian sausage until browned, breaking it into crumbles.
  • Add diced onion, sliced bell peppers, and minced garlic. Cook until the vegetables are soft, about 5 minutes.

3. Combine Ingredients:

  • Stir in the diced tomatoes and season with salt and pepper. Let it simmer for 2-3 minutes.

4. Assemble the Casserole:

  • Transfer the sausage and pepper mixture to a casserole dish.
  • Sprinkle shredded mozzarella cheese evenly over the top.

5. Bake:

  • Place the casserole in the preheated oven and bake for 20-25 minutes, or until the cheese is melted and bubbly.

6. Serve:

  • Remove from the oven and let it cool slightly before serving.
  • Enjoy as is or serve over rice, pasta, or crusty bread.

Instructions

Preheat the Oven:

  • Set your oven to 375°F (190°C).

2. Cook the Sausage and Vegetables:

  • In a large skillet over medium heat, cook the Italian sausage until browned, breaking it into crumbles.
  • Add diced onion, sliced bell peppers, and minced garlic. Cook until the vegetables are soft, about 5 minutes.

3. Combine Ingredients:

  • Stir in the diced tomatoes and season with salt and pepper. Let it simmer for 2-3 minutes.

4. Assemble the Casserole:

  • Transfer the sausage and pepper mixture to a casserole dish.
  • Sprinkle shredded mozzarella cheese evenly over the top.

5. Bake:

  • Place the casserole in the preheated oven and bake for 20-25 minutes, or until the cheese is melted and bubbly.

6. Serve:

  • Remove from the oven and let it cool slightly before serving.
  • Enjoy as is or serve over rice, pasta, or crusty bread.

Notes

  • Swap mozzarella for provolone or Parmesan for a different cheesy twist.
  • Use spicy Italian sausage for an extra kick of heat.
  • Leftovers can be stored in an airtight container in the fridge for up to 3 days.
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Category: Casserole
  • Method: Baking
  • Cuisine: Italian-American