This Baked Stuffed Bell Pepper Casserole is pure comfort in a pan. It has all the cozy flavor of classic stuffed peppers, but it is easier to serve, easier to slice, and a lot friendlier for a busy weeknight. I love how it feels hearty without being heavy, and it always brings that warm, home-cooked feeling to the table.
The flavor starts with 6 large bell peppers, any color, then builds with 1 tbsp extra-virgin olive oil, 1 lb 85/15 ground beef, 1 medium yellow onion, diced, 3 garlic cloves, minced, 1 cup cooked white rice, 1 (14.5 oz) can diced tomatoes, drained, 1 (8 oz) can tomato sauce, divided, 1 tsp dried oregano, 1 tsp smoked paprika, 1 tsp fine sea salt, 1/4 tsp freshly ground black pepper, 1 1/2 cups shredded mozzarella cheese, divided, and fresh basil, chopped, for garnish. The result is savory, slightly smoky, and rich with tomato flavor. Then the mozzarella melts right into the filling and on top, so every bite feels creamy and satisfying.
The method is simple, too. First, you blanch the peppers so they soften a bit. Next, you cook the beef, onion, garlic, and reserved pepper flesh. Then you stir in rice, tomatoes, seasonings, and some cheese. After that, you stuff the peppers, add tomato sauce, and bake until tender. The whole recipe takes 20 minutes to prep, 40 minutes to cook, and 1 hour total, so it fits well into an ordinary evening. Each serving is about 340 calories, and the recipe makes 6 servings.
This casserole is perfect for chilly nights, family dinners, and easy Sunday meal prep. It also works well for potlucks because it looks beautiful, travels well, and reheats nicely.
Why You’ll Love This Baked Stuffed Bell Pepper Casserole
- It is classic comfort food, but in an easier casserole-style format.
- It uses simple ingredients you may already have in your kitchen.
- The filling is hearty, savory, and full of familiar flavors.
- The recipe is family-friendly and makes enough for 6 servings.
- It reheats well, so leftovers make a very good lunch or next-day dinner.
Bell Pepper Tips
Bell peppers are the star here, so choose ones that are firm, bright, and similar in size if possible. That helps them cook evenly and stand upright in the baking dish. Any color works, but red, yellow, and orange peppers tend to taste sweeter, while green peppers give a more classic, slightly earthy flavor. Also, when you hollow them out, save the diced pepper flesh. It adds extra flavor to the filling and helps reduce waste.
Options for Substitutions
- Swap the ground beef for ground turkey, ground chicken, or Italian sausage.
- Use brown rice, quinoa, or cauliflower rice instead of white rice.
- Replace mozzarella with cheddar, Monterey Jack, provolone, or a blend.
- Use fresh thyme or Italian seasoning in place of dried oregano.
- Add a pinch of crushed red pepper flakes if you want more heat.
- Use dairy-free shredded cheese if you need a lactose-free option.
Watch Out for These Mistakes
One common mistake is skipping the blanching step. Since the peppers need time to soften in the oven, blanching helps them cook through without staying too firm. However, do not boil them too long. Just 3 to 4 minutes is enough. After that, the ice bath stops the cooking and helps the peppers hold their shape.
Another issue is not draining the beef well enough. If there is too much fat in the skillet, the filling can turn greasy. So, after browning the meat, take a moment to drain off the extra fat before adding the onion and peppers. As a result, the casserole tastes cleaner and the texture stays better.
Also, be careful not to overfill the peppers too loosely. The filling should be packed gently and mounded a little on top, but not stuffed so high that it spills over during baking. On the other hand, if you pack it too tightly, the peppers may split. A gentle fill gives the best result.
Finally, do not forget the sauce around the base of the dish. That tomato sauce helps keep everything moist as it bakes. Without it, the peppers can dry out around the edges. So, pour it in before the foil goes on, and then let the casserole bake until the cheese is melted and golden.
What to Serve With Baked Stuffed Bell Pepper Casserole?
This Baked Stuffed Bell Pepper Casserole pairs nicely with simple sides that balance the rich filling. A crisp green salad works well, since it adds freshness. Garlic bread or warm dinner rolls are also a good choice for soaking up the tomato sauce. If you want something more filling, roasted broccoli or steamed green beans make a nice match. In addition, a light cucumber salad can bring a cool, clean finish to the meal.
Storage Instructions
Store: Keep leftovers in an airtight container in the refrigerator for up to 4 days.
Freeze: Let the casserole cool completely, then wrap portions well and freeze for up to 3 months.
Reheat: For the stovetop, warm a portion in a covered skillet over low heat with a splash of water or tomato sauce. For the microwave, cover loosely and heat in 1-minute bursts until hot all the way through.
Recipe Info
Preparation Time: 20 minutes
Cooking Time: 40 minutes
Total Time: 1 hour
Level of Difficulty: Easy
Servings: 6 servings
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
Calories: about 1,900 to 2,150 total
Protein: about 115 to 135 grams
Fat: about 95 to 120 grams
Carbohydrates: about 90 to 120 grams
Ingredients
- 6 large bell peppers (any color), tops removed, seeded, and diced (reserve the diced pepper flesh)
- 1 tbsp extra-virgin olive oil
- 1 lb 85/15 ground beef
- 1 medium yellow onion, diced
- 3 garlic cloves, minced
- 1 cup cooked white rice
- 1 (14.5 oz) can diced tomatoes, drained
- 1 (8 oz) can tomato sauce, divided
- 1 tsp dried oregano
- 1 tsp smoked paprika
- 1 tsp fine sea salt
- 1/4 tsp freshly ground black pepper
- 1 1/2 cups shredded mozzarella cheese, divided
- fresh basil, chopped, for garnish
Step-by-Step Instructions
Step 1: Prepare the Peppers and Oven
Preheat your oven to 375°F (190°C) and grease a 9×13-inch baking dish. Then bring a large pot of water to a boil. Blanch the hollowed bell peppers for 3 to 4 minutes, and after that, move them right into ice water to stop the cooking. Once they are drained well, stand them upright in the baking dish.
Step 2: Brown the Beef
Heat the olive oil in a large skillet over medium-high heat. Add the ground beef and cook it for 6 to 7 minutes, breaking it into crumbles as it browns. When the meat is cooked, drain off the extra fat so the filling does not become greasy.
Step 3: Build the Filling
Add the onion and the reserved diced pepper flesh to the skillet. Cook for about 5 minutes, until the vegetables soften. Then add the garlic and cook for 1 minute more. Next, stir in the cooked rice, diced tomatoes, half the tomato sauce, oregano, smoked paprika, salt, and pepper. Let everything simmer for 3 to 4 minutes, just until slightly thickened. Finally, fold in 3/4 cup of the mozzarella.
Step 4: Stuff and Bake
Spoon the filling into the peppers and pack it gently. Mound it a little on top, but do not press too hard. Then pour the remaining tomato sauce around the base of the peppers in the baking dish. Cover the pan with foil and bake for 25 minutes.
Step 5: Finish With Cheese
Remove the foil and top each pepper with the remaining mozzarella. Bake uncovered for another 10 to 15 minutes, until the peppers are tender and the cheese is melted and golden. To finish, garnish with fresh basil and serve warm.
Conclusion
This Baked Stuffed Bell Pepper Casserole is a cozy, easy meal that brings classic comfort to the dinner table. It uses simple ingredients, it is full of savory flavor, and it bakes into a warm, cheesy dish that feels special without much fuss. Plus, it makes great leftovers, which is always a bonus.
If you try this recipe, I hope it becomes one of your regular dinner favorites. Leave a comment with your results, share any changes you made, or explore more easy comfort food recipes for your next meal.
Baked Stuffed Bell Pepper Casserole
Ingredients
Method
- Preheat your oven to 375°F (190°C) and grease a 9x13-inch baking dish.
- Bring a large pot of water to a boil. Blanch the hollowed bell peppers for 3 to 4 minutes, then transfer them to ice water to stop the cooking. Drain and stand them upright in the baking dish.
- Heat the olive oil in a large skillet over medium-high heat. Add the ground beef, cooking for 6 to 7 minutes while breaking it into crumbles. Drain off any excess fat.
- Add the onion and reserved diced pepper flesh to the skillet and cook for 5 minutes until softened. Stir in the minced garlic and cook for an additional minute.
- Add the cooked rice, diced tomatoes, half of the tomato sauce, oregano, smoked paprika, salt, and black pepper. Simmer for 3 to 4 minutes until slightly thickened. Fold in 3/4 cup of the mozzarella.
- Spoon the filling into the peppers, packing gently and mounding a little on top. Pour the remaining tomato sauce around the base of the peppers in the baking dish. Cover with foil and bake for 25 minutes.
- Remove the foil, top each pepper with the remaining mozzarella, and bake uncovered for another 10 to 15 minutes until the peppers are tender and the cheese is melted and golden.
- Garnish with fresh basil and serve warm.
