Deep-Dish Style Baked Italian Sausage with Roasted Peppers

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · Published 2026-05-29 · Updated 2026-05-29

This hearty baked Italian sausage dish features sweet roasted bell peppers and a rich tomato sauce that captures the essence of Chicago’s iconic deep-dish flavors. This italian-inspired beef ready in about 50 minutes pairs Italian sausage links, medium, thinly sliced yellow onion, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1 lb Italian sausage links
• 1 large, sliced into 1/4-inch strips red bell pepper
• 1 large, sliced into 1/4-inch strips green bell pepper
• 1 medium, thinly sliced yellow onion
• 2 tbsp olive oil
• 3, minced garlic cloves
• 14 oz can crushed tomatoes
• 1 tsp dried oregano
• 1 tsp dried basil
• 1/4 tsp red pepper flakes
• 1 tsp salt
• 1/2 tsp black pepper
• 1 cup shredded mozzarella cheese
• 1/4 cup, grated Parmesan cheese

Instructions

1. Step 1: Preheat oven to 375°F. In a large oven-safe skillet, heat 2 tbsp olive oil over medium heat. Add 1 lb Italian sausage links and brown on all sides for about 5 minutes, then remove and set aside.
2. Step 2: In the same skillet, add 1 large sliced red bell pepper, 1 large sliced green bell pepper, and 1 medium thinly sliced yellow onion. Sauté for 7 minutes until softened and slightly caramelized.
3. Step 3: Stir in 3 minced garlic cloves and cook for 30 seconds until fragrant. Pour in 14 oz crushed tomatoes, then add 1 tsp dried oregano, 1 tsp dried basil, 1/4 tsp red pepper flakes, 1 tsp salt, and 1/2 tsp black pepper. Simmer sauce for 5 minutes until slightly thickened.
4. Step 4: Nestle the browned Italian sausage links back into the sauce. Sprinkle 1 cup shredded mozzarella cheese evenly over the top, then add 1/4 cup grated Parmesan cheese.
5. Step 5: Transfer skillet to the oven and bake for 20 minutes until cheese is melted and bubbly. Let rest 5 minutes before serving.