Can I use cooked rice instead of uncooked?

Yes, if you have leftover rice, stir it in after browning the beef and reduce the broth by half. The casserole will bake in less time—about 25 minutes.

Absolutely. Assemble the casserole (without baking), wrap tightly in foil, and freeze for up to 3 months. Bake straight from frozen, adding an extra 20–25 minutes.

What type of peppers work best?

Any bell pepper works, but a colorful mix of red, yellow, and green adds the best flavor and presentation.

Can I make it low-carb?

Yes! Substitute cooked cauliflower rice for the white rice and reduce the broth to 1 cup, since cauliflower doesn’t absorb liquid like rice does.

Do I need to cook the rice first?

No, this recipe is designed to cook the rice in the casserole. Just be sure to cover it tightly with foil (or a lid) so the steam cooks it through.

Mozzarella melts beautifully, but cheddar, Monterey Jack, or a blend of cheeses all work well.

Easy One-Pan Stuffed Pepper Casserole

Name: Easy One-Pan Stuffed Pepper Casserole
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: American
Ingredients: 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 tsp Italian seasoning; 1 tsp paprika; ½ tsp salt; ½ tsp black pepper; 1 ½ cups shredded cheddar cheese (or mozzarella); 2 tbsp olive oil

This one-pot stuffed pepper casserole combines all the traditional flavors of the classic dish without the effort of stuffing individual peppers. It is a hearty meal featuring seasoned ground beef, rice, and melted cheese that is perfect for busy weeknights.

List of ingredients

1 lb 450 g ground beef (or ground turkey) – use lean meat to reduce excess grease.
1 medium onion (diced) – provides a savory aromatic base for the meat.
2 bell peppers (any color, chopped) – a mix of colors adds visual appeal and flavor.
3 cloves garlic (minced) – enhances the overall savory profile.
1 can (15 oz / 425 g diced tomatoes) – adds texture and a slight acidity.
1 can (15 oz / 425 g tomato sauce) – creates a rich, cohesive sauce for the rice.
1 cup uncooked white rice (long grain or jasmine) – absorbs the broth and seasonings.
3 cups beef broth (or chicken broth) – the primary liquid used to cook the rice.
1 tsp Italian seasoning – a blend of dried herbs for classic depth.
1 tsp paprika – provides a mild, smoky sweetness.
½ tsp salt (more to taste) – balances and enhances all other flavors.
½ tsp black pepper – adds a subtle spicy kick to the beef.
1 ½ cups shredded cheddar cheese (or mozzarella) – creates a creamy, melted topping.
2 tbsp olive oil – used for sautéing the meat and vegetables.

step-by-step instructions

Cook the meat: Heat olive oil in a large skillet or Dutch oven over medium heat. Add ground beef and onion, cooking until the beef is browned and the onion is soft, approximately 5–6 minutes. Drain any excess fat if necessary.
Add veggies and flavor: Stir in the chopped bell peppers and minced garlic. Cook for 2–3 minutes until the peppers begin to soften.
Build the base: Incorporate the diced tomatoes, tomato sauce, beef broth, uncooked rice, Italian seasoning, paprika, salt, and black pepper. Stir well to combine all ingredients.
Simmer: Bring the mixture to a boil, then immediately reduce the heat to low. Cover the pan and simmer for 20–25 minutes, stirring occasionally, until the rice is tender and most of the liquid is absorbed.
Cheesy finish: Remove the pan from the heat. Sprinkle shredded cheese evenly across the top. Cover the pan for 2–3 minutes until the cheese is completely melted and gooey.
Serve: Scoop the casserole into bowls and garnish with fresh parsley if desired.

Choosing the Best Ingredients

Selecting Lean Ground Beef

Using lean ground beef, such as 85/15 or 90/10, helps keep the casserole from becoming too greasy. If you use a higher fat percentage, be sure to drain the pan thoroughly after browning. Ground turkey is a great leaner alternative that pairs well with the tomato base.

Choosing Bell Pepper Varieties

A colorful mix of red, yellow, and orange peppers provides a sweeter flavor profile. Green bell peppers offer a slightly more bitter, earthy taste. Dicing them into uniform pieces ensures they cook evenly throughout the simmering process.

Long Grain vs Jasmine Rice

Long-grain white rice is the standard choice because it maintains its shape and cooks evenly. Jasmine rice adds a slightly floral aroma and a softer texture. Avoid using instant rice, as it will overcook and become mushy during the simmer.

Using Low-Sodium Beef Broth

Using a low-sodium beef broth allows you to control the salt levels of the final dish. Since the canned tomato products and cheese already contain salt, this prevents the casserole from tasting overly salty. Chicken broth is a suitable substitute if you prefer a lighter flavor.

Best Cheese for Melting

Sharp cheddar provides a bold, tangy flavor that cuts through the richness of the beef. Mozzarella is an excellent choice for those who prefer a milder taste and a more elastic, stretchy texture. A blend of both offers the best of both worlds.

Professional Cooking Techniques

Mastering the Meat Browning Process

Ensure the skillet is hot before adding the beef to achieve a deep brown sear. Browning the meat properly creates a richer flavor through the Maillard reaction. Avoid crowding the pan too much to prevent the meat from steaming in its own juices.

Preventing Rice from Sticking

Stirring the mixture occasionally during the simmer prevents the rice from clumping or sticking to the bottom of the pan. Using a heavy-bottomed Dutch oven helps distribute heat more evenly. If the rice seems to be sticking, add a small splash of extra broth.

Controlling the Simmer Temperature

Once the mixture reaches a boil, reducing the heat to low is critical. A hard boil will evaporate the liquid too quickly, leaving the rice undercooked and hard. A gentle simmer allows the rice to absorb the flavors slowly and evenly.

Achieving the Perfect Cheese Melt

Removing the pan from the heat before adding the cheese prevents the bottom from burning while the top melts. Covering the pan traps the remaining steam, which melts the cheese quickly. For a browned top, you can place the pan under a broiler for 1-2 minutes.

Flavor Variations and Substitutions

Creating a Tex-Mex Version

Replace the Italian seasoning with taco seasoning and add a can of drained black beans and corn. Use pepper jack cheese for a spicy topping. Garnish with fresh cilantro and a dollop of sour cream for an authentic feel.

Mediterranean Style Adjustments

Use ground turkey instead of beef and swap the Italian seasoning for dried oregano and a pinch of cinnamon. Replace the cheddar cheese with crumbled feta. Adding a squeeze of fresh lemon juice at the end brightens the overall flavor.

Meatless Protein Alternatives

Substitute the ground beef with cooked brown lentils or a plant-based ground meat alternative. Use vegetable broth instead of beef broth to keep the dish vegetarian. Increase the amount of bell peppers to add more bulk and texture.

Adding Spicy Heat

Dice a fresh jalapeño or habanero and sauté it along with the onions and garlic. You can also add a teaspoon of crushed red pepper flakes to the simmer. This provides a consistent heat throughout the rice and sauce.

Storage and Preservation Guide

Proper Refrigeration Methods

Allow the casserole to cool slightly before transferring leftovers to an airtight container. Store it in the refrigerator for up to four days. Ensure the container is sealed tightly to prevent the rice from drying out.

Freezing for Future Meals

This casserole can be frozen either before or after baking. If freezing unbaked, wrap the baking dish tightly with foil and plastic wrap for up to three months. If freezing cooked portions, use freezer-safe bags or containers.

Reheating in the Oven

Preheat your oven to 350°F (175°C) and transfer the casserole to an oven-safe dish. Add a tablespoon of water or broth to the edges to maintain moisture. Cover with foil and heat until the center is hot, about 15-20 minutes.

Microwave Reheating Tips

Place a portion of the casserole in a microwave-safe bowl and add a splash of beef broth. Cover the bowl with a damp paper towel to create steam. Heat on medium power in 1-minute intervals, stirring in between to ensure even heating.

Troubleshooting Common Issues

Fixing Undercooked Rice

If the liquid is gone but the rice is still firm, add another half cup of broth. Cover the pan tightly and simmer on low for an additional 5-10 minutes. The steam is essential for softening the core of the rice grains.

Handling Too Much Liquid

If the rice is cooked but the sauce is too watery, remove the lid and increase the heat to medium. Simmer for a few minutes without the cover to allow excess moisture to evaporate. Avoid overcooking the rice during this process.

Preventing Bottom Scorching

Scorching usually happens when the heat is too high or the pan is too thin. Use a heat diffuser if your stove has hot spots. Stirring from the bottom of the pan every few minutes helps move the rice and prevents burning.

Frequently Asked Questions

Can I use brown rice?

Yes, you can use brown rice, but it requires more liquid and a longer simmering time. Increase the beef broth by one cup and simmer for 40-50 minutes instead of 20-25 minutes.

Can I use cooked rice?

If using pre-cooked rice, reduce the beef broth to one cup. Add the cooked rice at the very end of the process, just before adding the cheese, and heat through for 5 minutes.

Which pan is best for this recipe?

A large cast-iron skillet or a heavy Dutch oven is ideal because they retain heat well. A non-stick skillet also works well for easier cleanup and prevents the rice from sticking.

How do I make this lower in calories?

Replace the ground beef with extra-lean ground turkey or chicken breast. Substitute the white rice with cauliflower rice and reduce the broth to one cup to avoid a soup-like consistency.