Oven Baked 5-Ingredient Unstuffed Pepper Casserole

 Oven Baked 5-Ingredient Unstuffed Pepper Casserole

If you love the comforting flavor of classic stuffed peppers but don’t want to spend time filling each pepper individually, this Oven Baked 5-Ingredient Unstuffed Pepper Casserole is the perfect solution. It combines tender bell peppers, seasoned ground beef, rice, tomato sauce, and melted cheese in one hearty baking dish.

This easy casserole brings all the familiar flavors of stuffed peppers together with much less work. Everything bakes into a warm, satisfying meal with savory beef, sweet peppers, tender rice, and a cheesy topping. It’s a wonderful option for busy weeknights, family dinners, or make-ahead meals when you want something filling without a long list of ingredients.

With just five main ingredients, this recipe keeps preparation simple while delivering plenty of homemade comfort.

Ingredients

• 1 pound lean ground beef: Provides the hearty, savory base of the casserole.
• 2 medium bell peppers, diced: Use green, red, yellow, or a mixture for color and sweetness.
• 2 cups cooked rice: White rice works well, but brown rice can also be used if already cooked.
• 1 can (15 ounces) tomato sauce: Brings everything together with classic stuffed-pepper flavor.
• 1 1/2 cups shredded mozzarella cheese: Melts into a delicious golden topping.

Optional pantry seasonings, such as salt, black pepper, garlic powder, or Italian seasoning, can be added to taste, but they are not required for the five-ingredient recipe.

How to Make Oven Baked 5-Ingredient Unstuffed Pepper Casserole

Step 1: Prepare the Oven

Preheat your oven to 375°F (190°C). Lightly grease a 9-by-13-inch baking dish to help prevent sticking.

Step 2: Brown the Ground Beef

Place the ground beef in a large skillet over medium heat. Cook for 7–10 minutes, breaking it into small pieces with a spoon, until it is fully browned and reaches 160°F (71°C). Drain excess grease if needed.

Step 3: Combine the Ingredients

In a large bowl, combine the cooked ground beef, diced bell peppers, cooked rice, and tomato sauce. Stir until everything is evenly coated. Transfer the mixture to the prepared baking dish and spread it into an even layer.

Step 4: Bake the Casserole

Cover the dish tightly with foil and bake for 25–30 minutes, or until the peppers have softened and the casserole is hot throughout. Because the rice is already cooked, you don’t need the long baking time required for raw rice.

Step 5: Add the Cheese

Remove the foil and sprinkle the shredded mozzarella evenly over the top. Return the casserole to the oven for another 8–10 minutes, until the cheese has melted and begins to turn lightly golden.

For a more golden finish, you can briefly use the broiler, watching carefully to prevent burning.

Step 6: Rest and Serve

Let the casserole rest for about 5 minutes before serving. This helps the mixture settle and makes it easier to scoop onto plates.

Tips for the Best Unstuffed Pepper Casserole

• Use cooked rice: This ensures the rice stays tender and the casserole cooks evenly.
• Cut the peppers evenly: Smaller, similar-sized pieces soften more consistently.
• Drain excess beef grease: This prevents the casserole from becoming oily.
• Choose your favorite peppers: Green peppers give a more traditional flavor, while red and yellow peppers add extra sweetness.
• Let it rest: A short resting period makes serving easier.

Easy Variations

• Make it extra cheesy: Add a little more mozzarella or use a mozzarella-cheddar blend.
• Use ground turkey: Substitute ground turkey for beef, cooking it thoroughly to 165°F (74°C).
• Add a spicy kick: Stir in a pinch of red pepper flakes if you enjoy heat.
• Try brown rice: Use fully cooked brown rice for a heartier texture.

These are optional changes; the original recipe keeps the main ingredient list to five items.

What to Serve with Unstuffed Pepper Casserole

This casserole is a complete meal on its own, but it also pairs nicely with a crisp green salad, steamed green beans, roasted broccoli, or warm dinner rolls. For a simple family dinner, serve generous portions straight from the baking dish.

Storage and Reheating

Allow leftovers to cool slightly, then refrigerate them in an airtight container within 2 hours. Store for up to 3–4 days.

To reheat, place an individual portion in the microwave until steaming hot, or cover the casserole with foil and warm it in a 350°F (175°C) oven. Add a small splash of water or tomato sauce if the rice seems dry.

You can also freeze portions in freezer-safe containers for up to 3 months for the best quality. Thaw overnight in the refrigerator before reheating.

Frequently Asked Questions

Can I make this casserole ahead of time?

Yes. Prepare the beef, rice, peppers, and tomato sauce mixture, then refrigerate it in a covered baking dish. Bake until hot throughout, adding the cheese near the end. If the mixture is cold from the refrigerator, allow extra baking time.

Do I need to cook the peppers first?

No. The diced peppers soften as the casserole bakes. Cutting them into small pieces helps them cook evenly.

Can I use leftover rice?

Absolutely. Leftover cooked rice is an excellent way to make this recipe even easier.

Why is my casserole watery?

Excess grease or a watery tomato sauce can contribute to a loose texture. Drain the beef well and let the casserole rest for a few minutes before serving.

Final Thoughts

Oven Baked 5-Ingredient Unstuffed Pepper Casserole is an easy, family-friendly dinner that delivers all the cozy flavor of stuffed peppers without the extra preparation. With savory ground beef, tender peppers, rice, tomato sauce, and gooey melted cheese, it is a simple recipe you’ll want to keep in your regular dinner rotation.