Stuffed pepper casserole is an easy one-pot dinner made with lean ground beef, colorful bell peppers, tomatoes, rice, savory seasonings, and melted cheese. Ready in about 45 to 50 minutes, this skillet meal delivers all the comforting flavors of traditional stuffed peppers without the extra work of hollowing and filling individual peppers.
Every bite is saucy, hearty, and full of sweet bell pepper flavor, tender rice, and browned beef. The cheese melts over the top to create a cozy finish, making this six-serving casserole a practical choice for family dinner, meal prep, or a relaxed weekend supper.
Jump to RecipeWhy You’ll Love This Recipe
This stuffed pepper casserole brings the familiar comfort of classic stuffed peppers to the table with a much simpler cooking method. Instead of roasting whole peppers and preparing a separate filling, everything cooks together in one deep skillet.
The combination of ground beef, onion, garlic, and bell peppers creates a deeply savory base. Tomatoes and beef broth provide enough moisture for the rice to cook while forming a rich sauce that coats every spoonful.
It is also an excellent family meal because the ingredients are familiar, affordable, and easy to adjust. Choose cheddar for a sharper finish or mozzarella for a mild, stretchy topping.
If one-pot rice dinners are a favorite in your home, you may also enjoy this easy chicken and rice casserole for another cozy dinner option.
Ingredients You’ll Need
The ingredient list is straightforward, but each item contributes important flavor or texture. Use a medium yellow onion, two garlic cloves, and three bell peppers for the aromatic vegetable base.
- Ground beef: Lean ground beef adds hearty flavor while keeping excess grease manageable.
- Bell peppers: A mixture of green, red, and yellow peppers gives the casserole attractive color and a balance of sweet and slightly earthy flavors.
- Canned tomatoes: Use one 14 to 15-ounce can of diced tomatoes without draining it. The tomato juices become part of the cooking liquid.
- Tomato sauce and beef broth: Together, they create the savory, tomato-rich sauce needed to cook the rice.
- Long-grain white rice: Add it uncooked so it simmers directly in the casserole and absorbs the seasoned liquid.
- Seasonings: Italian seasoning, Worcestershire sauce, paprika, salt, and black pepper give the skillet a balanced savory taste.
- Cheese: One cup of shredded cheddar or mozzarella melts over the top just before serving.
Worcestershire sauce and paprika are optional but commonly used in this style of recipe. The Worcestershire sauce adds a subtle savory depth, while paprika contributes gentle warmth and color.
For another comforting casserole idea with a different protein, keep our creamy turkey casserole on your dinner list.
How to Make It Step-by-Step
Step 1: Heat a large, deep skillet or Dutch oven over medium-high heat. Add the lean ground beef and diced onion, breaking the meat into small pieces as it cooks. Continue until the beef is browned and the onion is softened, then drain excess fat if needed.
Step 2: Add the minced garlic to the browned beef and onion. Stir and cook for about 30 seconds, just until the garlic smells fragrant; this short cooking time helps prevent it from becoming bitter.
Step 3: Add the diced bell peppers, undrained diced tomatoes, tomato sauce, beef broth, uncooked long-grain white rice, Italian seasoning, Worcestershire sauce, paprika, salt, and black pepper. Stir thoroughly so the rice is submerged and the vegetables are spread evenly throughout the skillet.
Step 4: Bring the mixture to a boil over medium-high heat. Once it is bubbling, reduce the heat to low, cover the skillet tightly, and simmer for approximately 20 to 25 minutes. Stir once or twice during cooking, checking that the liquid remains gently simmering rather than boiling aggressively.
Step 5: Test the rice near the end of the cooking time. It should be tender, and most of the liquid should be absorbed into the grains and vegetables. If the rice needs a little more time, keep the skillet covered and continue cooking until tender.
Step 6: Remove the skillet from the heat and let it stand, covered, for 5 minutes. Do not skip this rest, because the rice continues absorbing the sauce and the casserole becomes easier to serve.
Step 7: Sprinkle the shredded cheddar or mozzarella over the surface. Cover the skillet for another 1 to 2 minutes so the cheese melts, or place the skillet briefly under the broiler if it is broiler-safe. Serve while warm.
Chef’s Tips for the Best Casserole
The lid is one of the most important tools in this recipe. Rice cooks by absorbing both the broth and the steam trapped inside the skillet, so a loose lid or frequent uncovering can leave the grains firm and the casserole dry.
Dice the peppers into similarly sized pieces so they soften at the same rate. A mixture of green, red, and yellow peppers is traditional, but you can use any three bell peppers you have available.
Brown the beef thoroughly before adding the liquids. Developing color at this stage gives the finished dish a fuller savory flavor, while draining excess fat keeps the sauce from becoming greasy.
Use a deep skillet rather than a shallow frying pan. The casserole needs room for the broth, tomatoes, rice, and peppers to simmer without spilling, and a heavy Dutch oven works especially well for steady heat.
Let the casserole rest for the full 5 minutes before adding the cheese if possible. The short rest gives the rice time to finish absorbing liquid and prevents a loose, soupy serving.
For a little extra freshness, serve each portion with chopped parsley or sliced green onions. A simple green salad or steamed vegetable also works well beside this rich, tomato-based dinner.
Easy Variations and Serving Ideas
Ground turkey or Italian sausage may replace the ground beef. Turkey creates a lighter-tasting casserole, while Italian sausage brings additional seasoning and a more pronounced herb flavor.
Fire-roasted diced tomatoes can be used in place of regular diced tomatoes when you want a gentle smoky note. Keep them undrained so the recipe still has the necessary cooking liquid.
White long-grain rice is the right choice for the stated quick cooking time. Brown rice requires additional liquid and a substantially longer cooking time, so substituting it without changing the method may result in undercooked grains.
You can also turn this into a baked version by transferring the mixture to a casserole dish and baking it covered at 375°F for about 35 to 45 minutes, adding the cheese near the end. The one-pot skillet method remains the fastest approach and creates fewer dishes.
For a fun meal with a different comfort-food profile, pair this casserole with a small serving of ravioli pizza only when feeding a crowd, or keep the casserole as the main course with a crisp vegetable side.
Storage, Reheating, and Make-Ahead Notes
Cool leftovers promptly, then place them in an airtight container and refrigerate them. For the best texture, enjoy the leftovers within a few days and reheat only the portion you plan to eat.
Reheat individual servings in the microwave, stirring once if needed, until hot throughout. You can also reheat the casserole gently in a covered skillet with a small splash of beef broth or water to loosen the sauce.
If preparing ahead, cook the casserole according to the recipe and let it cool before refrigerating. Add a little liquid when reheating because the rice will continue to absorb sauce as it sits.
This recipe is especially useful for busy evenings because the prep work involves only dicing the onion and peppers and measuring the remaining ingredients. With the ingredients ready, the skillet moves from stovetop to table in roughly 45 to 50 minutes.
For a seafood-based dish to add to your collection of comforting meals, try this cheesy crab meat casserole when you want something rich and dinner-party worthy.
Stuffed Pepper Casserole
Ingredients
Method
- Heat a large, deep skillet or Dutch oven over medium-high heat. Add the ground beef and diced onion, then cook while breaking the beef into small pieces until the meat is browned and the onion begins to soften. Drain excess fat if necessary.
- Add the minced garlic and cook for about 30 seconds, stirring constantly. The garlic should become fragrant without browning.
- Stir in the diced bell peppers, undrained diced tomatoes, tomato sauce, beef broth, uncooked rice, Italian seasoning, Worcestershire sauce, paprika, salt, and black pepper. Mix well so the rice is distributed through the liquid.
- Bring the mixture to a boil, then reduce the heat to low. Cover the skillet and simmer for approximately 20 to 25 minutes, stirring once or twice, until the rice is tender and most of the liquid has been absorbed.
- Remove the skillet from the heat and let the casserole stand covered for 5 minutes. This resting time allows the rice to absorb remaining sauce and helps the texture set.
- Sprinkle the shredded cheddar or mozzarella evenly over the casserole. Cover for another 1 to 2 minutes, or place the skillet briefly under the broiler, until the cheese is melted and bubbly.
Notes
Final Thoughts
Stuffed pepper casserole is the kind of dinner that earns a regular place in the weekly rotation. It combines browned beef, tender peppers, saucy tomatoes, and fluffy rice in one pan, then finishes with a blanket of melted cheese.
The method is forgiving, the ingredients are easy to find, and the total cooking time stays within a practical 45 to 50 minutes. Keep the skillet covered, use long-grain white rice, and allow the finished casserole to rest for 5 minutes for the most dependable results.
Serve it in generous bowls with a simple salad, steamed vegetables, or warm bread for soaking up the tomato sauce. When dessert is on the menu, finish the meal with an easy cherry cobbler for a sweet, homestyle ending.
Whether you choose cheddar or mozzarella, this hearty skillet dinner delivers the comforting taste of stuffed peppers without the extra assembly. It is warm, colorful, filling, and simple enough for a busy weeknight.