Ground Beef Stuffed Pepper Casserole brings together the familiar flavors of classic stuffed peppers in a simple, comforting baked dish. Instead of stuffing individual peppers, everything is layered and baked together, making it perfect for busy evenings when you want something hearty without extra steps.

This casserole combines seasoned ground beef, tender rice, sweet bell peppers, and a rich tomato base, all finished with melted cheese. The result is a warm, satisfying meal with balanced textures and bold, home-style flavor in every bite.

It is a practical option for family dinners, meal prep, or casual gatherings. The ingredients are easy to find, and the preparation is straightforward, making it accessible even for less experienced cooks.

Ingredients Overview

The heart of Ground Beef Stuffed Pepper Casserole lies in its simple, well-balanced ingredients. Ground beef provides richness and depth, while also serving as the main protein. Choosing an 80/20 blend offers the right balance of flavor and moisture without making the dish overly greasy.

Bell peppers are essential for their mild sweetness and slight crunch. A mix of red, green, and yellow peppers adds both flavor variety and visual appeal. As they cook, they soften and blend into the dish while still holding a bit of texture.

Rice acts as the base that absorbs the savory tomato juices and beef flavor. Long-grain white rice is commonly used because it cooks evenly and stays fluffy. Brown rice can be substituted for a more nutty flavor, though it may require additional cooking time and liquid.

Tomato sauce and diced tomatoes form the backbone of the casserole’s sauce. They add acidity and moisture, helping to tie all the ingredients together. A touch of garlic, onion, and simple seasonings builds a savory profile without overpowering the dish.

Cheese is added toward the end of baking, creating a melted layer that brings everything together. Cheddar is a popular choice for its sharpness, but mozzarella or a blend can be used for a milder finish.

Ingredients

1 pound ground beef
1 cup uncooked long-grain white rice
2 cups beef broth
1 can (15 ounces) diced tomatoes, undrained
1 can (8 ounces) tomato sauce
3 bell peppers, chopped
1 small onion, finely chopped
3 cloves garlic, minced
1 teaspoon salt
1/2 teaspoon black pepper
1 teaspoon paprika
1/2 teaspoon dried oregano
1/2 teaspoon dried basil
1 tablespoon olive oil
1 1/2 cups shredded cheddar cheese
2 tablespoons chopped fresh parsley (optional)

Step-by-Step Instructions

Start by preheating your oven to 375°F. Lightly grease a large baking dish to prevent sticking and make cleanup easier.

In a large skillet over medium heat, add the olive oil and chopped onion. Cook for about 3–4 minutes until the onion softens and becomes translucent. Add the minced garlic and cook for another 30 seconds, stirring constantly to prevent burning.

Add the ground beef to the skillet. Break it apart with a spoon and cook until it is browned and no longer pink, about 6–8 minutes. Drain any excess fat if necessary to keep the casserole from becoming greasy.

Stir in the chopped bell peppers and cook for 3–4 minutes. The peppers should begin to soften but still hold some firmness. This helps them maintain texture during baking.

Add the uncooked rice, diced tomatoes with their juices, tomato sauce, and beef broth. Stir everything together until well combined. Season with salt, black pepper, paprika, oregano, and basil. Mix thoroughly so the flavors are evenly distributed.

Bring the mixture to a gentle simmer, then remove it from heat. Pour everything into the prepared baking dish, spreading it evenly.

Cover the dish tightly with foil and bake for 35–40 minutes. This allows the rice to cook fully by absorbing the liquid. Check for doneness by ensuring the rice is tender and most of the liquid is absorbed.

Remove the foil and sprinkle the shredded cheese evenly over the top. Return the casserole to the oven, uncovered, and bake for an additional 10–15 minutes until the cheese is melted and slightly bubbly.

Let the casserole rest for 5–10 minutes before serving. This helps it set and makes it easier to portion. Garnish with chopped parsley if desired.

Avoid common mistakes such as adding too little liquid, which can leave the rice undercooked, or overbaking, which can dry out the dish.

Tips, Variations & Substitutions

For a richer flavor, you can mix ground beef with ground sausage. This adds a slightly spiced depth that complements the peppers and tomato base.

If you prefer a lighter option, ground turkey or chicken works well. Just be mindful that leaner meats may require a bit of extra seasoning or a splash of oil to maintain moisture.

To add more vegetables, consider stirring in chopped zucchini, mushrooms, or spinach. These blend easily into the casserole without changing the overall flavor too much.

For a lower-carb version, replace the rice with cauliflower rice. Reduce the liquid slightly and shorten the baking time, since cauliflower cooks faster.

Cheese choices can also vary. Monterey Jack, mozzarella, or a blend can create a different texture and taste. For a sharper finish, use extra sharp cheddar.

Spice can be adjusted by adding red pepper flakes or a pinch of cayenne. For a milder dish, reduce the seasoning slightly and focus on the natural sweetness of the peppers.

Serving Ideas & Occasions

Ground Beef Stuffed Pepper Casserole pairs well with simple sides that complement its hearty nature. A crisp green salad with a light vinaigrette provides contrast and freshness.

Garlic bread or a warm dinner roll works well for soaking up the flavorful tomato sauce. Roasted vegetables such as broccoli or carrots can add balance to the meal.

This casserole is ideal for weeknight dinners because it can be prepared ahead of time and baked when needed. It also works well for potlucks, family gatherings, and casual weekend meals.

For drinks, iced tea, sparkling water, or a light red wine can complement the dish without overpowering it.

Nutritional & Health Notes

This casserole offers a balanced combination of protein, carbohydrates, and fats. Ground beef provides protein and essential nutrients like iron, while rice supplies energy through carbohydrates.

Bell peppers contribute vitamins, especially vitamin C, along with fiber. Tomatoes add antioxidants and help round out the nutritional profile.

To make the dish lighter, consider using lean ground beef or substituting part of it with vegetables. Reducing the cheese slightly can also lower the overall fat content.

Portion control plays a role in maintaining balance, as casseroles can be filling. Pairing with a fresh salad can help create a more complete and satisfying meal.

FAQs

Can I make this casserole ahead of time?

Yes, this casserole can be assembled in advance and stored in the refrigerator for up to 24 hours before baking. When ready to cook, allow it to sit at room temperature for about 20 minutes while the oven preheats. You may need to add a few extra minutes to the baking time since the ingredients will be cold. This makes it a practical option for busy schedules or planned meals.

Can I freeze Ground Beef Stuffed Pepper Casserole?

This casserole freezes well both before and after baking. If freezing before baking, assemble it in a freezer-safe dish and wrap tightly. When ready to use, thaw overnight in the refrigerator and bake as directed. If freezing after cooking, let it cool completely, portion it, and store in airtight containers. Reheat in the oven or microwave until heated through.

What type of rice works best?

Long-grain white rice is the most reliable choice because it cooks evenly and absorbs liquid well. Brown rice can be used for a heartier texture, but it requires more liquid and a longer cooking time. Instant rice is not recommended, as it can become too soft and lose structure during baking.

Can I use pre-cooked rice?

Yes, but adjustments are needed. Reduce the liquid in the recipe since the rice will not need to absorb as much moisture. Stir the cooked rice into the mixture before baking and shorten the cooking time slightly. This method can save time but may result in a softer texture.

How do I keep the casserole from drying out?

The key is maintaining the right balance of liquid and covering the dish during the initial baking stage. Using enough broth and tomato mixture allows the rice to cook properly. Keeping the dish covered with foil traps moisture, preventing dryness. Removing the foil only at the end helps melt the cheese without losing too much moisture.

What peppers are best to use?

A combination of bell peppers adds both color and flavor. Green peppers have a slightly more bitter taste, while red, yellow, and orange peppers are sweeter. Mixing them creates a balanced flavor profile and a more appealing presentation. All varieties soften nicely during baking.

How long does it last in the refrigerator?

Stored in an airtight container, the casserole can last up to 4 days in the refrigerator. Reheat portions in the microwave or oven until warmed through. Adding a small splash of broth or water before reheating can help maintain moisture and keep the texture pleasant.