Stuffed Peppers with Italian Sausage, Mushrooms & Cheesy Mashed Potato Topping
If you love stuffed peppers but feel the traditional rice filling leaves something to be desired, this hearty twist is guaranteed to become a new favorite. Instead of rice, these oversized bell peppers are packed with a rich Italian sausage and mushroom filling simmered in a flavorful tomato sauce, then topped with creamy cheddar mashed potatoes and finished with a golden, crispy cheese crust.
The result is a delicious cross between classic stuffed peppers and shepherd’s pie. Every bite delivers layers of flavor: sweet roasted peppers, savory meat filling, fluffy mashed potatoes, and bubbling melted cheese. Best of all, each pepper is a complete meal on its own.
Serve alongside a fresh garden salad with a bright lemon and olive oil dressing for the perfect balance.
Why You’ll Love This Recipe
- A satisfying, all-in-one meal
- Rich, savory sausage and mushroom filling
- Creamy mashed potato topping with crispy edges
- Perfect for meal prep and leftovers
- Easily customizable with your favorite proteins and vegetables
Recipe Information
Servings: 6 large stuffed peppers
Cooking Temperature: 375°F (190°C)
Ingredients
For the Peppers
- 6 large bell peppers (red, yellow, or orange recommended)
For the Meat Filling
- 1 lb (450–500 g) Italian sausage, casings removed
- 1 medium onion, diced
- Reserved pepper tops, diced
- 6 medium mushrooms (about 8 oz / 250 g), diced
- 3–5 cloves garlic, minced
- 1–2 tbsp butter
- 2 tsp Italian seasoning
- 2 tbsp tomato paste
- ⅔ cup (150 ml) tomato passata
- Salt and black pepper, to taste
- Pinch of sugar (optional)
- Oil for cooking
- Handful of shredded mozzarella cheese
For the Mashed Potato Topping
- 6 medium potatoes
- 3–4 tbsp (50 g) melted butter
- 3 tbsp (40 ml) hot milk or half-and-half
- 1 cup (100 g) finely shredded cheddar cheese
- Pinch of nutmeg
- Salt and black pepper, to taste
For the Cheesy Crust
- 2 cups (200–250 g) shredded mozzarella cheese
- Grated Parmesan cheese (optional, but highly recommended)
For the Fresh Side Salad
- Iceberg, romaine, or butter lettuce
- 1–2 cucumbers, sliced
- Cherry tomatoes, halved
- Fresh parsley, chopped
- Green onions, sliced
Lemon Herb Dressing
- 1–2 tbsp fresh lemon juice
- 3 tbsp extra virgin olive oil
- Salt and black pepper
- Pinch of dried oregano
Instructions
1. Prepare the Peppers
Cut the tops off the bell peppers and remove the seeds and membranes. Trim the bottoms slightly if needed so they stand upright, being careful not to cut through the pepper. Reserve the tops and dice them for the filling.
2. Make the Sausage Filling
Heat a little oil in a large skillet and brown the Italian sausage. Transfer to a bowl and set aside.
In the same pan, cook the onion, diced pepper tops, and mushrooms until softened and most of the moisture has evaporated.
Add the butter, garlic, and Italian seasoning. Cook for 1 minute until fragrant.
Stir in the tomato paste and cook for another 1–2 minutes. Add the tomato passata and season with salt, pepper, and a pinch of sugar if needed.
Return the sausage to the pan and simmer for 2–3 minutes until the mixture becomes thick and rich.
Remove from the heat and stir in a handful of mozzarella cheese until melted.
3. Prepare the Mashed Potatoes
Boil the potatoes until fork-tender. Drain well and allow excess moisture to evaporate.
Mash with melted butter and hot milk until smooth and creamy.
Stir in the cheddar cheese, nutmeg, salt, and pepper. The mash should remain fairly thick to hold its shape on top of the peppers.
4. Assemble the Stuffed Peppers
Fill each pepper generously with the sausage mixture, gently pressing down to remove air pockets.
Leave about 1 inch (2–3 cm) of space at the top for the mashed potatoes.
Spoon the mashed potatoes over each pepper and use a fork to create ridges on the surface. These ridges will become beautifully crispy during baking.
5. Bake
Arrange the peppers in a baking dish.
Bake at 375°F (190°C) for 25–30 minutes.
Remove from the oven and top with mozzarella and Parmesan cheese.
Return to the oven for an additional 10–15 minutes, or until the cheese is melted and bubbling.
For an extra golden finish, broil for the final 1–2 minutes.
6. Make the Salad
Combine the lettuce, cucumbers, tomatoes, parsley, and green onions in a large bowl.
Whisk together the lemon juice, olive oil, oregano, salt, and pepper, then drizzle over the salad just before serving.
Serving Tips
Allow the peppers to rest for 5–10 minutes before serving. This helps them hold their shape and makes them easier to plate.
For meal prep, let them cool completely before refrigerating. They reheat beautifully and become even firmer the next day.
Easy Variations
- Replace Italian sausage with ground beef, pork, turkey, or chicken.
- Add corn, zucchini, spinach, or black beans for extra vegetables.
- Use smoked cheddar, provolone, or Monterey Jack for different cheese flavors.
- Make it spicy with hot Italian sausage or crushed red pepper flakes.
The Perfect Comfort Food Dinner
These stuffed peppers combine everything you could want in a comfort-food meal: rich savory filling, creamy mashed potatoes, sweet roasted peppers, and a crispy golden cheese topping. Hearty, satisfying, and packed with flavor, they’re guaranteed to impress family and guests alike.
