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best ever Stuffed Pepper Casserole recipe

Stuffed Pepper Casserole

Course Beef, Main Course
Cuisine American
Keyword stuffed-pepper-casserole, stuffed-peppers-recipe
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings 8 servings
Calories 391kcal


  • 1 ½-2 lbs lean ground beef (OR ground chicken or turkey)
  • 1 medium red bell pepper diced
  • 1 medium green bell pepper or poblano pepper diced
  • 1 medium yellow bell pepper diced
  • 1 medium onion diced
  • olive oil
  • 4 cloves garlic minced
  • 3 tsp steak seasoning i.e. Montreal or Chicago, your favorite
  • 1 ½ tsp dry Italian seasoning
  • ½-1 tsp salt adjust depending on steak seasoning used
  • 1 tsp red pepper flakes adjust to taste
  • 1 23 oz jar garlic and herb seasoned marinara sauce
  • 1 14.5 oz can diced tomatoes with green chilis
  • 2 Tbsp worcestershire sauce
  • 2 cups cooked long grain rice (Adjust amount adding more, if desired)
  • 3 cups shredded colby jack or cheddar cheese divided
  • chopped fresh parsley for garnishing


  • Preheat oven to 350°F. Brush a large 12 inch cast iron skillet with oil OR spray a 13 x 9 inch baking dish with cooking spray. Set aside. (You can use any similar size oven safe skillet)
  • In large heavy bottomed pot or skillet, cook together ground beef, bell peppers, and onion in a couple of drizzles of olive oil over medium-high heat. Cook for 8 to 10 minutes, stirring occasionally, until beef is browned and vegetables have softened.
  • Drain excess fat from pot and add garlic, steak seasoning, Italian seasoning salt and red pepper flakes. Cook for 1 minute longer or until garlic is fragrant.
  • To the pot add marinara sauce, tomatoes, rice and 1 ½ cups cheese. Mix well. Spoon mixture into skillet or baking dish. Sprinkle with remaining cheese.
  • Bake for 30-35 minutes until hot and bubbly.
  • Let stand for 5 minutes, then serve garnished with parsley.


You can substitute one 15 oz can plus one 8 ounce can of seasoned tomato sauce in place of marinara sauce, if desired.


Serving: 1serving | Calories: 391kcal | Carbohydrates: 22g | Protein: 26g | Fat: 22g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 85mg | Sodium: 426mg | Potassium: 448mg | Fiber: 1g | Sugar: 2g | Vitamin A: 896IU | Vitamin C: 33mg | Calcium: 239mg | Iron: 3mg