Stuffed Pepper Casserole Bake

Stuffed Pepper Casserole Bake brings together all the comforting flavors of classic stuffed peppers in an easier, family-friendly dish. Instead of individually filling peppers, everything cooks together in one hearty casserole. As a result, every spoonful delivers tender peppers, savory beef, fluffy rice, and melted cheese in a warm, satisfying bite.

Moreover, this recipe is ideal for busy evenings when you want comfort food without complicated prep. Because the ingredients cook together in one pan, the flavors blend beautifully while the peppers soften and the cheese melts into a golden topping.

Interestingly, stuffed peppers have long been a beloved dish across Europe and the Mediterranean. However, American home cooks later transformed those flavors into casseroles during the mid-1900s, making meals faster and easier for families.

Therefore, this Stuffed Pepper Casserole Bake keeps the nostalgic taste everyone loves while simplifying the cooking process. It’s hearty, comforting, and perfect for weeknight dinners.

Recipe Yield: 6 servings

INGREDIENTS

1 lb ground beef
1 1/2 cup cooked white rice
2 tbsp olive oil
1 medium yellow onion, diced
3 bell peppers, diced (red, green, or yellow)
3 cloves garlic, minced
1 1/2 cup crushed tomatoes
1/2 cup tomato sauce
1 tsp paprika
1 tsp Italian seasoning
1/2 tsp sea salt
1/2 tsp black pepper
1/2 tsp onion powder
1 cup shredded mozzarella cheese
1/2 cup shredded cheddar cheese
2 tbsp fresh parsley, chopped

INSTRUCTIONS

1. Preheat and prepare:
Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch casserole dish and set aside.

2. Sauté the vegetables:
Meanwhile, heat olive oil in a large skillet over medium heat. Add diced onion and bell peppers. Cook 4–5 minutes until slightly softened. Then stir in minced garlic and cook another 30 seconds until fragrant.

3. Brown the beef:
Next add ground beef to the skillet. Cook while breaking it apart until browned and fully cooked, about 6–7 minutes. Drain excess grease if necessary.

4. Combine the filling:
Afterward stir in cooked rice, crushed tomatoes, tomato sauce, paprika, Italian seasoning, salt, pepper, and onion powder. Mix thoroughly and simmer for about 3 minutes so the flavors combine.

5. Assemble the casserole:
Transfer the mixture to the prepared casserole dish and spread evenly. Then sprinkle mozzarella and cheddar cheese across the top.

6. Bake the casserole:
Bake uncovered for 18–22 minutes, until the cheese melts and the casserole becomes hot and bubbly.

7. Finish and serve:
Finally remove from the oven, sprinkle chopped parsley over the top, and allow the casserole to rest for 5 minutes before serving.

Helpful Tips to Perfect This Recipe

• Use colorful bell peppers for balanced flavor:
  A mix of red, yellow, and green peppers adds sweetness and depth. In addition, the color contrast makes the casserole more visually appealing while enhancing the natural pepper flavor.
• Cook the rice before mixing:
  Because the casserole bakes quickly, using fully cooked rice ensures the texture stays tender. Otherwise, uncooked rice could absorb too much liquid and dry out the dish.
• Let the casserole rest before serving:
  Although it’s tempting to serve immediately, resting the casserole for about five minutes helps it set slightly. As a result, the portions hold together better and the flavors settle beautifully.