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This Italian Sausage and Peppers dish is a hearty, colorful, and flavor-packed meal that’s easy enough for weeknights yet special enough for guests. Sweet bell peppers, onions, and juicy Italian sausage come together in a rich tomato sauce perfect served over spaghetti or your favorite pasta!

Ingredients

4 Tbsp. olive oil, divided
1 small white or yellow onion, chopped
3 bell peppers, chopped (use a mix of red, yellow, and orange)
2 tsp. crushed garlic (about 3–4 cloves)
1 tsp. fennel seeds
1 tsp. Italian seasoning
½ tsp. kosher salt
Freshly ground black pepper, to taste
½ tsp. red pepper chili flakes (optional, for heat)
1 (12 oz.) package Italian chicken sausage, sliced into rounds
1 (28 oz.) can crushed tomatoes
Cooked spaghetti (or pasta of choice)
Grated Parmesan cheese, for garnish (optional)

Instructions

Cook the Onions
Heat 2 tablespoons of olive oil in a large nonstick skillet over medium-high heat. Add the chopped onion and cook, stirring occasionally, for about 5 minutes, until softened.
Add the Bell Peppers
Add the chopped bell peppers and continue cooking for another 5 minutes, stirring occasionally, until the vegetables start to soften.
Add the Seasonings
Stir in the garlic, fennel seeds, Italian seasoning, salt, black pepper, and chili flakes (if using). Cook for about 1 minute, until fragrant.
Cook the Sausage
Push the peppers and onions to one side of the skillet. Add the remaining 2 tablespoons of olive oil and the sliced sausage rounds to the other side. Cook for about 5 minutes, turning occasionally, until the sausage is golden brown on both sides.
Combine and Simmer
Stir the sausage together with the peppers and onions. Pour in the crushed tomatoes, bring to a boil, then reduce the heat to medium-low. Simmer for 5 minutes, allowing the flavors to blend. Taste and adjust seasoning if needed.
Serve
Spoon the sausage and pepper mixture over cooked spaghetti (or your preferred pasta). Garnish with grated Parmesan cheese and serve warm.

Why You’ll Love This Recipe

Simple and satisfying: Uses basic pantry ingredients but delivers big Italian flavor.
Colorful and hearty: The bell peppers add color and sweetness to the savory sauce.
Family-friendly: Mild sausage keeps it kid-friendly, but you can easily add heat.
Perfect for meal prep: Tastes even better the next day!

Tips

Don’t overcook the peppers: You want them soft but still a little crisp for the best texture.
Use a large skillet: Gives everything room to brown properly.
Deglaze if needed: Add a splash of broth or wine after browning the sausage to pick up flavorful bits from the pan.
For extra richness: Stir in a tablespoon of tomato paste before adding the crushed tomatoes.

Variations and Substitutions

Sausage options: Use pork, turkey, or plant-based Italian sausage instead of chicken.
No pasta? Serve it over rice, polenta, or even in a hoagie roll for a sandwich-style meal.
Add veggies: Mushrooms, zucchini, or spinach make great additions.
Make it spicy: Use hot Italian sausage or extra chili flakes for more kick.
Low-carb version: Skip the pasta and serve over spiralized zucchini or cauliflower rice.

FAQs

Can I make this ahead of time?
Yes! It keeps well in the fridge for up to 3 days. Reheat gently on the stovetop before serving.

Can I freeze it?
Absolutely. Let it cool completely, then freeze in airtight containers for up to 2 months.

Can I use fresh tomatoes instead of canned?
Yes — about 4–5 medium ripe tomatoes, chopped, can replace one 28 oz. can of crushed tomatoes. Cook longer to reduce excess liquid.

Is it gluten-free?
The sauce is naturally gluten-free. Just serve with gluten-free pasta.

Serving and Suggestions

Serve over spaghetti, penne, or rigatoni.
Pair with a green salad and garlic bread for a complete Italian meal.
Top with fresh basil, parsley, or a sprinkle of red pepper flakes for extra flavor.
Enjoy with a glass of red wine like Chianti or Merlot for the perfect pairing.