Stuffed Bell Pepper Casserole

A stuffed bell pepper casserole gives you all the comfort of classic stuffed peppers without the fuss of hollowing and tying each pepper. This version bakes everything in one dish: sweet bell peppers, seasoned ground beef, rice, and melted cheese under a bubbling top. You get the same flavors in about half the hands-on time.

The recipe below is built for a standard 9x13 baking dish and feeds four to six people. It uses pantry staples and finishes in the oven so the rice cooks through and the peppers soften. If you like make-ahead dinners, this one reheats cleanly and freezes without falling apart. If you enjoyed this, our register is worth trying next. Making this stuffed bell pepper casserole at home is surprisingly straightforward once you know the key steps.

Why You'll Love These Stuffed Bell Pepper Casserole

• One dish means less cleanup and even cooking from edge to center.
• Chopped peppers spread the sweet, lightly charred flavor through every bite.
• It uses raw rice that cooks in the sauce, so no separate pot needed.
• Leftovers hold their texture for lunch the next day.

Ingredients You'll Need

• 1 lb (450 g) ground beef, 80/20 lean-to-fat ratio
• 3 large bell peppers, any color, diced into 1-inch pieces
• 1 cup (190 g) uncooked long-grain white rice
• 1 can (14.5 oz / 410 g) diced tomatoes, undrained
• 1 cup (240 ml) beef broth
• 1 small yellow onion, diced
• 2 cloves garlic, minced
• 1 tbsp olive oil
• 1 tsp salt
• 1/2 tsp black pepper
• 1 tsp dried oregano
• 1 1/2 cups (170 g) shredded cheddar cheese

Ingredient Substitutions

Ground beef: Replace with 1 lb ground turkey for a leaner dish. Turkey releases less fat, so add 1 tbsp olive oil at the browning step to keep the rice from drying. Expect a milder taste and a slightly softer crumble rather than crisp edges. The stuffed bell pepper casserole works well for weeknight cooking when time is limited.

Long-grain white rice: Swap with 1 cup uncooked brown rice plus 1/4 cup extra broth. Brown rice needs about 20 more minutes covered bake time at the same temperature. The grains stay firmer and nuttier, and the top will look less saucy. Storing leftover stuffed bell pepper casserole correctly keeps it tasting good for days.

Cheddar cheese: Use an equal weight of shredded mozzarella for a stretchier, milder melt. Mozzarella browns less, so broil the last 2 minutes if you want color. The dish will taste creamier and less sharp than with cheddar. For the best results with this stuffed bell pepper casserole, read through all the steps before starting.

Bell peppers: Replace with 3 cups diced zucchini for a lower-carb base. Zucchini gives off water, so cut broth to 3/4 cup and bake uncovered. The texture turns softer and the sweet pepper note disappears.

Step-by-Step Instructions

1. Heat medium-high heat with 1 tbsp olive oil in a large skillet. Add the onion and cook 3 minutes until translucent, then add garlic and stir 30 seconds until fragrant.
2. Add the ground beef, salt, pepper, and oregano. Break it up with a spoon and brown 6–8 minutes until no pink remains and the edges look golden and crispy.
3. Stir in the diced bell peppers, uncooked rice, diced tomatoes with juice, and beef broth. Mix until the rice is coated and the liquid comes to a low simmer.
4. Pour the mixture into a 9x13 dish and spread level. Cover tightly with foil and bake at 180°C / 350°F for 35 minutes.
5. Remove foil, scatter cheddar on top, and bake uncovered 10–12 minutes until the cheese melts and the rice is tender when pierced.
6. Rest the dish 5 minutes before serving so the sauce thickens and the rice settles.

Pro Tips

Brown the beef in a single layer and do not overcrowd the pan or it steams instead of searing, leaving a gray texture with less flavor.

Let the covered bake run the full 35 minutes before adding cheese; opening early drops the oven heat and leaves the rice hard at the center.

For deeper pepper flavor, broil the diced peppers 4 minutes before mixing them in, watching for light char spots at the edges.

Read technique detail on food science if you want to understand why resting cooked rice dishes improves texture.

Shred your own cheese from a block; bagged shreds contain starch that prevents a clean melt and leaves a filmy top.

Common Mistakes to Avoid

Using pre-cooked rice doubles the liquid and turns the bake soggy since the grains keep absorbing sauce. Use raw rice as listed so it sets the broth.

Skipping the foil cover bakes the top dry while the center stays raw. Keep it covered for the first bake so steam cooks the rice evenly.

Cutting peppers too small makes them vanish into the rice and you lose the sweet bite. Aim for 1-inch pieces that stay distinct after baking.

Serving Suggestions

Spoon the casserole into bowls and top with sliced scallions or a spoon of pepper and egg style greens on the side for crunch. A simple cucumber salad balances the rich cheese.

For a bread side, warm cinnamon rolls only if you want a sweet contrast, though most serve this with a green vegetable instead.

Storage and Reheating

Cool the dish to room temperature within up to 2 hours then refrigerate in an airtight container for up to 4 days. The rice firms as it chills.

Reheat single portions in a 175°C / 350°F oven for 15 minutes until the center reaches 74°C / 165°F for food safety with beef. Microwave works but softens the top.

Freeze unbroken portions for up to 2 months in sealed containers. Thaw overnight in the fridge before reheating so the rice warms through without drying.

Recipe Variations

Mexican Style

Add 1 tbsp chili powder and 1 tsp cumin with the beef, and swap cheddar for pepper jack. Stir in 1/2 cup corn before baking. The dish turns smoky and pairs with banana bread as a sweet closer if you like.

Low-Carb Option

Replace rice with 2 cups riced cauliflower and cut broth to 1/2 cup. Bake uncovered 25 minutes since there is no grain to cook. Expect a softer, wetter base with the same pepper and beef flavor.

Vegetarian Swap

Use 1 lb crumbled tofu or lentils instead of beef and vegetable broth instead of beef broth. Add 1 tbsp soy sauce for depth. The bake needs the same time and gives a lighter, alfredo friendly plate beside pasta.

Sausage Version

Swap beef for 1 lb Italian sausage, removed from casing. The fat level is higher so drain 2 tbsp after browning. The oregano and cheese meet a fennel note that suits blue cheese olives on a snack board.