Some evenings, the filling is the part of stuffed peppers you want most: savory beef, tender vegetables and rice tucked into tomato sauce. Stuffed pepper casserole puts that combination in one baking dish, with diced peppers throughout and a light mozzarella topping. Starting with cooked rice removes the guesswork about whether the grains will soften before dinner.
This stuffed pepper casserole serves six and takes about 50 minutes with cooked rice ready. Brown the beef, soften the peppers, simmer the tomato mixture, then bake until the center is hot and the cheese melts. The result should be moist enough to spoon easily, with visible rice grains rather than a stiff block.
Serving Suggestions
Give the casserole a short rest before serving so a scoop holds together without becoming compact. I prefer a shallow bowl: it catches the tomato sauce and makes it easy to get pepper, beef and rice in the same bite. A crisp accompaniment gives the soft filling a useful contrast.
- Fresh and crunchy: Pair it with cucumber slices, shredded cabbage or a green salad with a bright vinaigrette.
- For a larger table: Add roasted broccoli or green beans. Bread is optional because rice already makes this a substantial main dish.
- For lunch tomorrow: Divide cooled leftovers into shallow containers within two hours and refrigerate. Use within three to four days and reheat to 165°F; a splash of water helps loosen the rice.
Let the casserole carry the meal. One fresh vegetable side is usually enough, and the cheese topping does not need a second rich sauce.
Variations
The most useful changes keep the casserole’s moisture and proportions in mind. Raw rice is not a direct substitute here; it needs a different liquid balance and cooking time. Use fully cooked rice, whether white or brown, and break up clumps before mixing it into the sauce. Rice does not read the recipe, so a little attention now saves a crunchy surprise later.
- Brown rice: Replace the cooked white rice with the same volume of cooked brown rice for a firmer, nuttier bite.
- Different meat: Ground turkey can replace the beef. Cook it to 165°F and expect a milder flavor; taste the sauce before adding more seasoning.
- Change the peppers: All red peppers make a sweeter filling; a red-and-green mixture brings a more savory contrast. Keep the total chopped volume similar.
- A little heat: Add a pinch of red pepper flakes to the tomato mixture, or pass hot sauce at the table.
I’d keep the peppers in small, even pieces and the rice cooked before making other changes. Those two details matter more to the final texture than the color of the baking dish.
Health Benefits
This meal brings several food groups together without asking one ingredient to do all the work. Beef contributes protein, iron and vitamin B12; peppers and tomatoes add vegetables, while rice supplies carbohydrate. The nutritional balance depends on the actual portion, beef leanness and cheese quantity, so a comforting casserole does not need a sweeping health label.
- Choose the beef deliberately: Leaner ground beef generally contributes less fat than a fattier blend. Drain pooled fat before adding the sauce.
- Use vegetables for volume: Keep the generous pepper quantity rather than replacing it with more rice or cheese.
- Look at sodium: No-salt-added tomatoes and tomato sauce let you control the seasoning. Check labels because packaged products vary.
- Keep portions practical: Serve one-sixth of the dish with vegetables and adjust the amount to your appetite.
Enjoy the mix of protein, vegetables and rice for what it offers. The estimated nutrition in the card is a guide to this version, with sides and substitutions changing the numbers.
A Cozy Dinner Worth Making
The appeal of stuffed pepper casserole is its familiar flavor and flexible serving style. You can put the baking dish on the table and let everyone take a scoop, without balancing individual pepper shells or chasing filling around the plate. Aim for tender peppers, a thick but spoonable sauce and melted cheese with a few golden spots.
If you enjoy savory beef dinners, Dishora’s carne en su jugo offers a different, brothy direction. For another use of legumes at dinner, keep black bean burgers in your meal rotation. Here, the full quantities and cooking sequence are in the recipe card below.
Stuffed Pepper Casserole Recipe
Ingredients
- 1 pound 93% lean ground beef 454 g
- 1 tablespoon olive oil 13.5 g
- 1 medium yellow onion diced, about 150 g
- 2 bell peppers one red and one green; seeded and diced, about 300 g total
- 3 cloves garlic minced, about 9 g
- 1 14.5-ounce can no-salt-added diced tomatoes 411 g, with their juices
- 1 15-ounce can no-salt-added tomato sauce 425 g
- 3 cups cooked long-grain white rice about 474 g; fully cooked, not raw
- 1/4 cup water 60 ml
- 1 teaspoon dried oregano
- 1 teaspoon smoked paprika
- 1/4 teaspoon black pepper
- 1/4 teaspoon salt optional; taste sauce before adding
- 1 cup shredded low-moisture part-skim mozzarella 112 g
- 1 tablespoon chopped fresh parsley optional
Equipment
- 9-by-13-inch baking dish
- Large 12-inch skillet
- Mixing bowl
- Knife and cutting board
- Measuring cups and spoons
- Instant-read food thermometer
- Spatula or wooden spoon
Instructions
- Preheat the oven to 375°F. Set out a 9-by-13-inch baking dish. Break up any clumps in the fully cooked rice.
- Heat a large skillet over medium-high heat. Add the beef and cook for 7–8 minutes, breaking it into small crumbles, until browned and cooked through to 160°F. Drain pooled fat, then transfer the beef to a bowl.
- Add the olive oil, onion and diced peppers to the skillet. Cook over medium heat for 6–7 minutes, stirring, until the onion softens and the peppers begin to yield. Stir in the garlic and cook for 30 seconds.
- Return the beef to the skillet. Add the tomatoes with their juices, tomato sauce, water, oregano, smoked paprika and black pepper. Simmer gently for 5 minutes, then taste and add the optional salt only if needed.
- Fold in the cooked rice until evenly coated. The mixture should be moist and spoonable; add another tablespoon of water if necessary. Spread in the baking dish and sprinkle the mozzarella evenly over the top.
- Bake uncovered for 15–20 minutes, until the cheese has melted with a few golden spots and the center reaches 165°F. Let stand for 5 minutes, then add the optional parsley and divide into six servings.
Nutrition
Notes
Tried this recipe?
Let us know how it turned out!Emily Parker is DISHORA’s recipe-writing persona, bringing a warm, practical voice to everyday cooking. Her focus is simple ingredients, comforting flavors and clear steps that make a dish feel approachable. From cozy dinners to something sweet, Emily’s recipes invite readers to try something delicious and make it their own.