This stuffed pepper casserole combines ground beef, bell peppers, rice, and a rich tomato sauce into a hearty, comforting one-dish meal inspired by classic stuffed peppers.
Preheat oven to 350°F (175°C) and grease a 9x13-inch baking dish.
In a large skillet, brown ground beef over medium-high heat, breaking it apart as it cooks.
Add diced onion and cook until softened, then stir in garlic.
Add diced bell peppers and cook until slightly tender.
Stir in tomato paste and cook for 1 minute.
Add diced tomatoes, tomato sauce, Worcestershire sauce, Italian seasoning, smoked paprika, salt, and pepper.
Simmer mixture for 5 minutes to blend flavors.
Stir in cooked rice and 1 cup shredded cheese.
Transfer mixture to prepared baking dish and spread evenly.
Top with remaining cheese.
Bake uncovered for 25–30 minutes until bubbly and cheese is melted.
Let rest for 5 minutes, garnish with parsley, and serve.
Notes
Drain excess fat after browning beef to avoid a greasy casserole. Do not overcook peppers before baking to maintain texture. Let casserole rest 5 minutes before serving. This dish freezes well for up to 3 months.