Stuffed pepper casserole delivers the classic, vibrant flavors of traditional stuffed bell peppers in a convenient, deconstructed format perfect for busy weeknights. This hearty dish combines seasoned ground beef, fluffy rice, and tender bell peppers simmered in a savory tomato-based sauce, all topped with melted cheese for a satisfying, wholesome meal that pleases the entire family.
Why You’ll Love This Stuffed Pepper Casserole
This dish captures the essence of classic comfort food without the tedious process of hollowing and stuffing individual peppers. By baking everything together in a single pan, the flavors meld beautifully, ensuring every spoonful is packed with perfectly cooked bell peppers and seasoned, juicy beef.
You will appreciate the sheer simplicity of this recipe. It relies on pantry staples like canned tomatoes, long-grain rice, and aromatic spices, making it an ideal candidate for meal planning. The cleanup is minimal since the entire meal comes together in one deep baking dish or large skillet.
The texture profile is remarkably balanced, featuring the slight snap of colorful bell peppers contrasting against tender grains of rice and savory, browned ground beef. The final layer of melted cheese adds a creamy richness that ties all the elements together, providing a golden, bubbling finish that looks as good as it tastes.
Ingredients of the Stuffed Pepper Casserole
For the Casserole Base
- 1 pound lean ground beef
- 3 large bell peppers, diced (a mix of red, yellow, and green)
- 1 medium yellow onion, finely chopped
- 2 cloves garlic, minced
- 1.5 cups long-grain white rice, uncooked
- 3 cups beef broth
- 28 ounces crushed tomatoes
- 1 tablespoon Italian seasoning
- 1 teaspoon smoked paprika
- Salt and black pepper to taste
For the Topping
- 2 cups shredded mozzarella cheese
- 1/4 cup freshly chopped parsley

Equipment / Tools Needed
- Large oven-safe skillet or Dutch oven
- Chef’s knife and cutting board
- Measuring cups and spoons
- Silicone spatula
- Aluminum foil
Step-by-Step Instructions
Step 1: Brown the Beef
Preheat your oven to 375°F. Place your large oven-safe skillet over medium-high heat. Add the ground beef and cook until browned, breaking it apart with a spatula into small, uniform crumbles. Drain any excess fat if necessary.
Step 2: Sauté the Aromatics
Add the chopped onions and diced bell peppers to the skillet with the beef. Sauté for about 5 to 7 minutes until the peppers soften and the onions turn translucent and slightly golden. Stir in the minced garlic and cook for another minute until fragrant.
Step 3: Combine Ingredients
Stir in the uncooked rice, ensuring it is well-coated in the beef and vegetable juices. Pour in the crushed tomatoes and beef broth. Season the mixture with the Italian seasoning, smoked paprika, salt, and pepper. Stir everything until evenly distributed.
Step 4: Bake the Casserole
Bring the mixture to a gentle simmer on the stove. Cover the skillet with a lid or a tight layer of aluminum foil. Transfer the skillet to the preheated oven and bake for 30 to 35 minutes, or until the liquid has been absorbed and the rice is tender.
Step 5: Add the Finishing Touches
Remove the skillet from the oven. Remove the cover and sprinkle the shredded mozzarella cheese generously over the top. Return the skillet to the oven uncovered for another 5 to 7 minutes, or until the cheese is bubbly and starting to turn a light golden brown. Garnish with fresh parsley before serving.

Tips & Tricks
For the best texture, ensure your rice is fully submerged in the tomato broth before covering. If you prefer a more intense tomato flavor, you can stir in two tablespoons of tomato paste during the sauté stage. Always grate your cheese from a block for better melting consistency compared to pre-shredded varieties.
Serving Suggestions
This casserole is a complete meal, but it pairs beautifully with a crisp side salad featuring a light vinaigrette. For a more substantial feast, serve it alongside some warm, buttery garlic bread. It is an excellent choice for potlucks, as it stays warm well in a chafing dish.
Variations / Substitutions
- Use ground turkey or lean ground chicken for a lighter protein option.
- Swap white rice for quinoa if you prefer an extra boost of fiber and protein.
- Add a pinch of red pepper flakes during the sautéing stage if you enjoy a subtle hint of heat.
- Mix in extra vegetables like diced zucchini or corn to increase the nutritional content.
Storage and Reheating
Store leftovers in an airtight container in the refrigerator for up to 4 days. To reheat, add a small splash of water or broth to a portion and warm it in the microwave in 30-second intervals to prevent the rice from drying out. You can also reheat it in an oven-safe dish at 350°F until heated through.
Nutritional Info
Calories: 420 kcal
Protein: 26g
Carbohydrates: 45g
Fat: 16g
Conclusion
This stuffed pepper casserole is a reliable staple that bridges the gap between classic home cooking and modern convenience. With its vibrant colors and deeply savory profile, it is a dish that invites everyone to the table for a second helping.
Whether you are feeding a busy family or prepping lunches for the week, this recipe delivers consistent results every time. Enjoy the warmth and simplicity of a classic meal reinvented.
FAQ
Can I prepare this casserole ahead of time?
Yes, you can assemble the mixture, cover it, and keep it in the refrigerator for up to 24 hours before baking. You may need to add an extra 5-10 minutes to the baking time to ensure the center is piping hot.
Is there a way to make this with brown rice?
Brown rice takes longer to cook than white rice and requires more liquid. If substituting, you will need to increase the liquid by half a cup and extend the baking time by about 20-30 minutes, keeping it covered until the rice is tender.
Can I freeze this dish?
This casserole freezes very well. Once fully cooled, transfer it to a freezer-safe container and store for up to 3 months. Thaw it overnight in the refrigerator before reheating in the oven.
How can I prevent the rice from getting mushy?
The key is to avoid over-stirring and ensure you are using long-grain rice, which holds its structure better than short-grain varieties. Once the liquid is absorbed, remove it from the heat promptly so it does not continue to cook in the residual steam.

Stuffed Pepper Casserole
Ingredients
- 1 pound lean ground beef
- 3 large bell peppers, diced (a mix of red, yellow, and green)
- 1 medium yellow onion, finely chopped
- 2 cloves garlic, minced
- 1.5 cups long-grain white rice, uncooked
- 3 cups beef broth
- 28 ounces crushed tomatoes
- 1 tablespoon Italian seasoning
- 1 teaspoon smoked paprika
- Salt and black pepper to taste
- 2 cups shredded mozzarella cheese
- 1/4 cup freshly chopped parsley
Instructions
- Preheat your oven to 375°F.
- Place a large oven-safe skillet over medium-high heat and brown the ground beef until cooked through, draining any excess fat.
- Add the chopped onion and diced bell peppers to the beef and sauté for 5 to 7 minutes until softened.
- Stir in the minced garlic and cook for 1 minute until fragrant.
- Stir in the uncooked rice, beef broth, crushed tomatoes, Italian seasoning, and smoked paprika.
- Season with salt and black pepper to taste.
- Bring the mixture to a simmer, then cover the skillet with aluminum foil.
- Transfer the skillet to the preheated oven and bake for 30 to 35 minutes, or until the rice is tender and the liquid is absorbed.
- Remove the foil, sprinkle the shredded mozzarella cheese over the top, and bake for an additional 5 minutes until the cheese is melted and bubbling.
- Remove from the oven, garnish with fresh parsley, and serve warm.