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Stuffed Pepper Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.2 from 76 reviews
  • Author: Mary
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour
  • Yield: 6 servings
  • Category: Main Course
  • Method: Stovetop, Baking
  • Cuisine: American
  • Diet: Gluten Free

Description

This Stuffed Pepper Casserole is a comforting, cheesy one-pan meal featuring ground beef, colorful bell peppers, tender rice, and a flavorful tomato sauce. It’s an easy weeknight dinner that combines the classic flavors of stuffed peppers in a convenient, hearty casserole form.


Ingredients

Scale

Meat and Vegetables

  • 1 tablespoon olive oil
  • 1 pound ground beef or ground turkey
  • 1 medium onion, diced
  • 3 bell peppers (red, green, or yellow), chopped
  • 3 cloves garlic, minced

Sauce and Seasoning

  • 1 can (15 ounces) tomato sauce
  • 1 can (14.5 ounces) diced tomatoes
  • 1 cup beef or chicken broth
  • 1 teaspoon Italian seasoning
  • 1 teaspoon smoked paprika
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper

Other Ingredients

  • 1 cup uncooked long-grain white rice
  • 1 1/2 cups shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • Optional garnish: fresh parsley


Instructions

  1. Preheat Oven: Preheat your oven to 375°F (190°C) to prepare for baking the casserole later.
  2. Brown Meat and Sauté Onion: Heat olive oil in a large oven-safe skillet or Dutch oven over medium-high heat. Add the ground beef and diced onion, cooking for about 6–7 minutes until the beef is browned and the onion is softened.
  3. Add Peppers and Garlic: Stir in the chopped bell peppers and minced garlic, cooking for another 2–3 minutes to soften the peppers and release the garlic aroma.
  4. Add Sauces, Broth, Seasonings and Rice: Pour in the tomato sauce, diced tomatoes, and broth. Add Italian seasoning, smoked paprika, salt, pepper, and uncooked rice. Stir well to combine all ingredients and bring the mixture to a boil.
  5. Simmer Covered: Reduce the heat to low, cover the skillet or Dutch oven, and simmer for 18–20 minutes until the rice is tender and most of the liquid is absorbed.
  6. Add Cheese and Bake: Remove from heat, sprinkle shredded mozzarella and grated Parmesan cheese evenly on top. Transfer to the oven and bake uncovered for 10–12 minutes until the cheese melts and becomes bubbly.
  7. Garnish and Serve: Remove from the oven and garnish with fresh parsley if desired. Serve hot and enjoy your delicious stuffed pepper casserole.

Notes

  • For a lower-carb version, substitute cauliflower rice for the white rice and reduce the amount of broth accordingly.
  • This casserole can be made ahead and stored in the refrigerator for up to 3 days before baking, making it a convenient meal prep option.
  • Use gluten-free broth to keep the dish gluten-free.