Italian Sausage & Pepper Casserole – A Rustic, Flavor-Packed Family Dinner
A hearty baked casserole of savory Italian sausage, sweet bell peppers, onions, garlic, and rich tomato sauce — perfect for easy weeknight dinners or make-ahead meals.
Ingredients
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1½ lbs Italian sausage (pork, chicken, or turkey)
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3 bell peppers (red, yellow, green), sliced
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1 large onion, sliced
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3 garlic cloves, minced
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1 (28 oz) can crushed tomatoes or 2 cups marinara
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1 tsp Italian seasoning
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½ tsp red pepper flakes (optional)
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Salt & pepper to taste
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1 cup shredded mozzarella (optional)
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¼ cup grated Parmesan (optional)
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2 tbsp olive oil
Instructions
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Brown sausage in a skillet. Set aside.
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Sauté peppers, onions, and garlic until softened.
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In a bowl, combine sausage, veggies, tomatoes, seasoning, and spices.
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Spread mixture in a greased 9×13 casserole dish. Top with cheese if using.
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Bake at 375°F for 25 minutes covered, then 10–15 minutes uncovered until bubbly.
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Rest 5 minutes before serving.
Notes
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Add cooked pasta to make it a one-dish meal.
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Freeze after baking and reheat later for easy dinners.
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Use spicy sausage for extra heat.