Stuffed Pepper Casserole Recipe: Easy Cheesy Beef and Rice Dinner

Introduction

This Stuffed Pepper Casserole Recipe takes the familiar flavors of classic stuffed peppers and turns them into an easier one-pan meal. Instead of stuffing individual peppers, everything is cooked together with seasoned ground beef, tender bell peppers, tomatoes, rice, and a savory tomato broth.

The result is hearty without requiring a lot of preparation. The rice absorbs the tomato and beef flavors as it cooks, while the peppers become tender and slightly sweet. A layer of melted cheddar or mozzarella finishes the casserole with a creamy, cheesy topping.

It’s a practical weeknight dinner, especially when you want the comfort of stuffed peppers without spending time filling and arranging individual peppers. Serve it on its own or alongside a simple green salad and some crusty bread.

Quick Recipe Overview

• Prep Time: 15 minutes
• Cook Time: 35–40 minutes
• Total Time: About 50–55 minutes
• Servings: 5–6
• Difficulty Level: Easy
• Cuisine: American-inspired
• Course: Main Course / Dinner

Ingredients

For the Casserole

• 1 lb (450 g) ground beef or ground turkey
• 1 medium onion, diced
• 2 bell peppers, any color, chopped
• 3 cloves garlic, minced
• 1 can (15 oz / 425 g) diced tomatoes
• 1 can (15 oz / 425 g) tomato sauce
• 1 cup uncooked white rice, long grain or jasmine
• 3 cups beef broth or chicken broth
• 1 teaspoon Italian seasoning
• 1 teaspoon paprika
• 1/2 teaspoon salt, plus more to taste
• 1/2 teaspoon black pepper
• 1 1/2 cups shredded cheddar cheese or mozzarella
• 2 tablespoons olive oil

Step-by-Step Instructions

1. Prepare the vegetables

Dice the onion and chop the bell peppers into bite-sized pieces.

Mince the garlic and set all three aside.

Keeping the pepper pieces relatively similar in size helps them cook evenly and makes the finished casserole easier to eat.

2. Brown the meat

Heat a large, deep oven-safe skillet or Dutch oven over medium-high heat.

Add the olive oil and ground beef or turkey.

Cook for approximately 5–7 minutes, breaking the meat apart with a wooden spoon as it cooks.

Continue until the meat is browned and cooked through.

If using ground beef with a higher fat content, carefully drain some of the excess fat before continuing.

3. Add the onion and peppers

Add the diced onion and chopped bell peppers to the skillet.

Cook for approximately 4–5 minutes, stirring occasionally.

The onion should begin to soften and the peppers should start becoming tender, but they don’t need to be fully cooked at this stage.

4. Add the garlic and seasonings

Stir in the minced garlic, Italian seasoning, paprika, salt, and black pepper.

Cook for about 30–60 seconds, stirring constantly, until the garlic becomes fragrant.

Avoid cooking the garlic for too long over high heat because it can burn.

5. Add the tomatoes and broth

Pour in the diced tomatoes and tomato sauce.

Add the beef broth or chicken broth and stir well, scraping the bottom of the skillet to loosen any browned bits.

Bring the mixture to a gentle simmer.

6. Add the uncooked rice

Stir the uncooked rice into the tomato and meat mixture.

Make sure the rice is distributed throughout the liquid rather than sitting in one concentrated layer.

Bring the mixture back to a gentle simmer.

7. Cover and cook

Reduce the heat to low.

Cover the skillet tightly with a lid and simmer for approximately 18–25 minutes, depending on the rice you’re using.

Stir once or twice during cooking to prevent the rice from sticking to the bottom.

The casserole is ready for the next step when the rice is tender and most of the liquid has been absorbed.

If the rice is still firm but the pan looks dry, add a small amount of additional broth or water and continue cooking.

8. Check the consistency

Once the rice is tender, remove the lid and check the casserole.

It should be moist and cohesive, with enough tomato sauce surrounding the rice and meat. It shouldn’t be watery, but it also shouldn’t be completely dry.

Taste and adjust the salt or black pepper if necessary.

9. Add the cheese

Sprinkle the shredded cheddar or mozzarella evenly over the top.

If your skillet isn’t oven-safe, transfer the casserole to a lightly greased baking dish before adding the cheese.

Place it under a broiler for 2–4 minutes, watching carefully, until the cheese is melted and lightly golden.

Alternatively, cover the skillet with a lid over low heat for a few minutes until the cheese melts.

10. Rest and serve

Remove the casserole from the heat and let it rest for about 5 minutes before serving.

This allows the rice to settle and the cheese to firm slightly.

Scoop into bowls and serve warm.

Recipe Tips for Success

Use a deep skillet

The rice expands as it cooks, so a deep skillet or Dutch oven gives everything enough room. A shallow frying pan can make stirring difficult and increase the chance of liquid spilling over.

Don’t rinse the rice if you want a creamier casserole

For this type of one-pan dish, leaving some of the rice’s surface starch can help the sauce become slightly thicker as it cooks.

If you prefer particularly separate grains, you can rinse the rice, but you may notice a slightly looser finished texture.

Keep the simmer gentle

The rice needs time to absorb the liquid. A very aggressive boil can cause the liquid to evaporate before the rice is tender.

Keep the pan covered and maintain a gentle simmer.

Stir occasionally

Rice can settle on the bottom and stick as it cooks. Stirring once or twice during the cooking process helps prevent this.

Don’t stir constantly, though, because excessive stirring can make the rice texture softer and more cohesive.

Choose peppers you enjoy

Green peppers provide a more pronounced, slightly bitter flavor, while red, yellow, and orange peppers tend to be sweeter.

Using a mixture of colors also makes the finished casserole more visually appealing.

Don’t add all the cheese too early

The cheese belongs at the end. Adding it while the rice is still cooking can make the mixture stick and make it more difficult to judge the consistency.

Let it rest before serving

The casserole will continue absorbing some moisture as it rests. Five minutes is usually enough to make it easier to serve without turning the rice dry.

Ingredient Substitutions

Ground beef

Ground turkey is an easy substitute. Because turkey is generally leaner, use the same olive oil and avoid overcooking it.

Rice

Long-grain white rice and jasmine rice both work well. Avoid substituting brown rice without adjusting the cooking time and liquid because it generally requires longer cooking.

Bell peppers

Any combination of red, yellow, orange, and green bell peppers can be used.

Cheese

Cheddar gives the casserole a stronger, sharper flavor, while mozzarella produces a milder, stretchier topping. A combination of both works well too.

Beef broth

Chicken broth can be used if that’s what you have available. Beef broth provides a deeper flavor when using ground beef.

Fresh garlic

If necessary, garlic powder can replace fresh garlic, although fresh garlic provides a more pronounced flavor.

Tomato sauce

If you don’t have canned tomato sauce, an appropriate amount of plain passata or strained tomatoes can be used. Adjust the seasoning according to the product you choose.

Recipe Variations

Spicy Stuffed Pepper Casserole

Add 1/2 teaspoon crushed red pepper flakes along with the other seasonings. You can also use a diced jalapeño with the bell peppers.

Mexican-Inspired Version

Replace the Italian seasoning with chili powder and cumin. Add black beans or corn and top with cheddar, avocado, and fresh cilantro.

Extra-Cheesy Version

Mix a small amount of cheddar into the cooked casserole before adding another layer of cheese on top.

Turkey Stuffed Pepper Casserole

Use ground turkey instead of beef and chicken broth. Add a little extra paprika or garlic if you want a stronger savory flavor.

Mushroom and Pepper Casserole

Sauté sliced mushrooms along with the onion and bell peppers. Cook until the mushrooms release their moisture and begin to brown before adding the tomatoes and broth.

Vegetable-Loaded Version

Add diced zucchini, spinach, peas, or finely chopped carrots. Vegetables that release a lot of moisture should be cooked down first so they don’t make the casserole watery.

Storage and Reheating

Allow leftovers to cool appropriately before transferring them to airtight containers.

Refrigerate the casserole and generally use it within 3–4 days.

The rice will continue absorbing sauce as it sits, so leftovers will usually be thicker than the freshly cooked casserole.

To reheat on the stovetop, place a portion in a skillet over low to medium-low heat and add a splash of broth or water. Stir gently until heated through.

For microwave reheating, add a small splash of broth or water before heating. Warm in short intervals and stir between intervals.

The casserole can be frozen, although cooked rice may become somewhat softer after thawing. If freezing, cool the casserole completely, divide it into freezer-safe containers, and thaw overnight in the refrigerator before reheating.

Adding a little broth when reheating can help restore moisture.

Serving Suggestions

This casserole contains meat, rice, vegetables, and tomato sauce, so it can easily serve as a complete meal.

Salad

A simple green salad with a light vinaigrette provides a fresh contrast to the warm, cheesy casserole.

Bread

Serve with crusty bread, garlic bread, or warm dinner rolls for soaking up the tomato sauce.

Vegetables

If you want an additional vegetable side, try:

• Steamed green beans
• Roasted zucchini
• Simple roasted carrots
• Sautéed spinach

Toppings

Add any of these just before serving:

• Fresh parsley
• Chopped green onions
• Extra Parmesan
• Crushed red pepper flakes
• Fresh basil

For the Mexican-inspired variation, avocado and cilantro make particularly good toppings.

Nutrition Information

The following is an estimated nutritional breakdown per serving, assuming 6 servings and using ground beef, white rice, cheddar cheese, and beef broth.

• Calories: Approximately 550
• Protein: Approximately 30 g
• Carbohydrates: Approximately 55 g
• Fat: Approximately 23 g
• Saturated Fat: Approximately 9 g
• Fiber: Approximately 5 g
• Sugar: Approximately 9 g
• Sodium: Approximately 1,000 mg

These figures are estimates only. Actual nutrition will vary depending on the fat percentage of the meat, type of rice, cheese, broth, canned tomatoes, and exact portion sizes.

Frequently Asked Questions

Can I make this Stuffed Pepper Casserole ahead of time?

Yes. You can cook the casserole ahead, refrigerate it, and reheat it when needed. Since the rice absorbs more liquid as it sits, add a splash of broth or water when reheating to loosen the consistency.

Can I use ground turkey instead of beef?

Yes. Ground turkey is a straightforward substitute for ground beef. Chicken broth works particularly well with turkey, although beef broth can also be used for a deeper savory flavor.

Can I use brown rice?

Brown rice can be used, but it generally requires more cooking time and liquid than white rice. Because the original recipe is designed for white rice, changing to brown rice may require adjusting both the liquid and cooking time.

Why is my rice still hard?

The rice may need additional time or liquid. Add a small amount of broth or water, cover the skillet again, and continue cooking over low heat until the rice is tender.

Why is my casserole watery?

It may simply need a few more minutes uncovered so excess liquid can evaporate. Remember that the rice will continue absorbing moisture as the casserole rests, so avoid cooking it until completely dry.

Can I use mozzarella instead of cheddar?

Yes. Mozzarella gives you a mild flavor and a softer, stretchier cheese topping. Cheddar provides a stronger savory flavor. A mixture of the two is also a good option.

Can I freeze Stuffed Pepper Casserole?

Yes. The casserole can be frozen, although the rice may have a softer texture after thawing. Freeze it in airtight portions and thaw overnight in the refrigerator before reheating.

How can I make this casserole spicy?

Add crushed red pepper flakes, cayenne pepper, or diced jalapeño. You can also serve individual portions with hot sauce.

Final Thoughts

This Stuffed Pepper Casserole keeps all the familiar flavors of stuffed peppers while making the preparation much simpler. Ground beef, colorful bell peppers, tomato sauce, and rice cook together in one skillet, then everything is finished with a generous layer of melted cheese.

The biggest keys to getting the texture right are keeping the rice at a gentle simmer, checking the liquid as it cooks, and allowing the casserole to rest briefly before serving.

It’s an easy recipe to adapt, too. Use ground turkey, change the cheese, add extra vegetables, or turn up the heat when you want something different. For a straightforward family dinner, it’s a reliable combination of simple ingredients and comforting flavors.

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