Name: Unstuffed Bell Pepper Casserole with Ground Beef Recipe
Prep time: 15 min
Cook time: 1 h 15 min
Total time: 1 h 30 min
Cuisine: American
Ingredients: 1 pound ground beef; 2 cloves garlic, minced; 1 small onion, chopped; 2 large green bell peppers, chopped; 14.5 oz can diced tomatoes; 8 oz can tomato sauce; 1/2 cup beef broth; 1/2 cup long grain rice, uncooked; 1 tablespoon Worcestershire sauce; 1/2 teaspoon salt; 1/4 teaspoon black pepper; 1 cup shredded mozzarella cheese

I absolutely love making this Unstuffed Bell Pepper Casserole with Ground Beef Recipe because it captures all the comforting flavors of classic stuffed peppers without all the fuss. It’s a warm, hearty dish where tender ground beef mingles with fresh green peppers, savory tomato sauce, and perfectly cooked rice, all baked together in one pan. The melted mozzarella cheese on top adds that irresistible gooey finish that always makes it a hit in my house. Whenever I need a satisfying weeknight meal that feels like a cozy hug, this casserole is my go-to.

Why You'll Love This Unstuffed Bell Pepper Casserole with Ground Beef Recipe

What really makes this casserole shine is its rich flavor profile. I love the way the green peppers keep a little bit of their crunch and freshness, cutting through the hearty, savory ground beef and the tangy tomato base. The Worcestershire sauce adds a subtle depth that you don’t expect but can’t live without once you try it. The dish manages to be both wholesome and indulgent at the same time, and that balance keeps me coming back for more.

Another reason I’m such a fan is how simple it is to prepare. I can brown the beef and mix everything in about 15 minutes, then just pop it in the oven to bake while I take care of other tasks. It’s a fantastic no-fuss dinner recipe that feels homemade but doesn’t require standing over the stove for ages or prepping a million ingredients. Plus, it’s perfect for cozy family dinners or even meal prep for a couple of days. It’s reliable, delicious, and easy to love.

Ingredients You'll Need

The image shows a white oval baking dish filled with a casserole. The bottom layer has a chunky red tomato sauce with small pieces of vegetables. On top of this is a thick layer of melted mozzarella cheese, which is creamy white with some yellow areas where it has browned slightly. The cheese covers the dish almost fully but shows hints of the sauce and bits of vegetables through it. The dish is placed on a white marbled surface with a blurred beige cloth and garlic bulbs in the background. Photo taken with an iphone --ar 4:5 --v 7

This recipe calls for simple, everyday ingredients that come together beautifully. Each one plays a key role in building the texture, flavor, and color that make this casserole so satisfying and inviting.

Ground beef: The hearty base that provides rich flavor and satisfying protein.
Garlic: Adds a fragrant, savory boost to the meat mixture.

Onion: Gives a sweet and aromatic depth when cooked with the beef.
Green bell peppers: Brings freshness and just the right touch of crunch and color.
Diced tomatoes: Adds juicy acidity to balance the richness of the beef.

Tomato sauce: Creates a luscious, cohesive sauce that keeps everything moist.
Beef broth: Enhances the savory notes and helps the rice cook properly.
Long grain rice: Absorbs all the delicious flavors and makes the casserole filling.

Worcestershire sauce: Provides a subtle umami kick that lifts the entire dish.
Salt and pepper: Essential for seasoning and highlighting all the flavors.
Mozzarella cheese: Melts into a golden, gooey topping that makes this casserole irresistible.

Directions

Step 1: Preheat your oven to 350 degrees Fahrenheit to get it ready for baking this delicious casserole.

Step 2: In a large skillet over medium heat, add the ground beef, minced garlic, and chopped onion. Cook this mixture, breaking the beef apart with a spatula, until the beef is browned and the onions are translucent, about 10 minutes.

Step 3: Transfer your cooked beef mixture into an 11x8-inch baking dish, distributing it evenly across the bottom.

Step 4: Add chopped green peppers, the entire can of diced tomatoes (with juice), tomato sauce, beef broth, uncooked long grain rice, Worcestershire sauce, salt, and pepper on top of the beef. Use a large spoon or spatula to mix everything thoroughly so that the rice is evenly dispersed and the flavors meld.

Step 5: Cover the baking dish tightly with aluminum foil. Bake in the preheated oven for 75 minutes, or until the rice is tender and no longer crunchy. This slow bake allows the rice to absorb all the delicious liquid and flavors.

Step 6: Carefully remove the foil and sprinkle a generous layer of shredded mozzarella cheese over the casserole. Return it to the oven and bake uncovered for an additional 10 minutes, until the cheese is fully melted and bubbly.

Step 7: Take the casserole out, let it sit for a few minutes to set, then serve warm and enjoy every comforting bite!

Servings and Timing

This Unstuffed Bell Pepper Casserole with Ground Beef Recipe serves 4 hearty portions, making it perfect for a family dinner or meal prep for a couple of days. The prep time is short, about 15 minutes, mostly spent browning the beef and prepping the ingredients. The cook time is longer since the rice bakes right in the sauce, taking about 75 minutes plus an additional 10 minutes to melt the cheese on top. Altogether, you’re looking at roughly 1 hour and 30 minutes from start to finish, including resting time so the casserole holds together nicely before serving.

How to Serve This Unstuffed Bell Pepper Casserole with Ground Beef Recipe

A white oval casserole dish filled with a baked layered dish is shown, sitting on a white marbled surface. The top layer is melted white cheese that looks soft and smooth, with some light yellow patches from the melted cheese. Beneath the cheese, glimpses of diced green and red vegetables peek through, adding colors of green and red with mixed textures of softness. The dish appears thick and hearty, with cheese covering the entire surface evenly. A blurred garlic clove is seen in the background. Photo taken with an iphone --ar 4:5 --v 7

When I serve this casserole, I like to complement it with something light and fresh to balance the richness. A crisp green salad with a zesty vinaigrette or a simple cucumber and tomato salad works beautifully. Roasted vegetables like asparagus or green beans also add a nice touch of color and texture alongside the warm casserole.

For presentation, I love letting the melted mozzarella cheese be the star on top. A sprinkle of fresh parsley or chopped green onions adds a burst of color and freshness just before serving. If you want to get a bit fancy, serving it in individual ramekins or smaller baking dishes can make it feel special for dinner guests or family members.

This dish pairs wonderfully with medium-bodied red wines like a Merlot or a Zinfandel which complement the tomato and beef flavors without overpowering them. For a non-alcoholic option, a sparkling water with a twist of lime or a tart cranberry juice adds a refreshing contrast. I usually serve this casserole hot out of the oven to enjoy its full comforting warmth, but it’s also great at room temperature, making it practical for potlucks and gatherings.

Variations

I love experimenting with this recipe to keep it exciting. One simple swap is using ground turkey or chicken instead of beef for a lighter but still flavorful casserole. If you want to kick up the spice level, adding some red pepper flakes or swapping green bell peppers for poblano peppers gives it a lovely smoky heat.

For my friends on gluten-free diets, this recipe is naturally gluten-free as long as you double-check your Worcestershire sauce and broth for hidden gluten. To make a vegetarian version, swap the ground beef for a combination of mushrooms and lentils to keep that hearty texture and umami flavor. Adding some smoked paprika and extra garlic helps make it just as satisfying.

If you’re short on time, I’ve even adapted this to a slow cooker by browning the beef and sautéing the veggies first, then layering everything in the pot and cooking on low for about 3-4 hours. It turns out just as tasty and lets you walk away without worrying about the oven.

Storage and Reheating

Storing Leftovers

I usually store the leftovers in airtight containers, ideally glass for easy reheating, and keep them in the refrigerator. The casserole stays delicious for up to 4 days, though I always recommend consuming it sooner if you want the rice to stay perfectly tender and the flavors vibrant.

Freezing

This Unstuffed Bell Pepper Casserole with Ground Beef Recipe freezes really well, which is great for meal planning. After baking and cooling completely, I portion it into freezer-safe containers or heavy-duty freezer bags. It keeps well for up to 3 months. Just be sure to thaw in the fridge overnight before reheating for best results.

Reheating

To reheat, I prefer warming it in the oven at 325 degrees Fahrenheit until heated through to maintain the casserole’s texture and prevent the rice from drying out. Cover it loosely with foil to keep moisture in. You can also use a microwave for convenience, but be sure to add a splash of water and cover it to keep the rice soft. Avoid overheating to prevent the beef from becoming tough.

FAQs

Can I use brown rice instead of long grain white rice?

Absolutely! Brown rice can be substituted, but you’ll need to increase the baking time and possibly add a bit more broth because it takes longer to cook. I usually start checking after 90 minutes, and add 10-15 extra minutes if needed to make sure the rice is tender.

Is this recipe freezer-friendly?

Yes, it freezes beautifully. Just make sure you cool it completely before freezing and use airtight containers. Thaw it overnight in the fridge and reheat gently to preserve the texture and flavor.

Can I make this recipe vegan?

You can! Replace the ground beef with lentils or a plant-based meat substitute, use vegetable broth instead of beef broth, and top with vegan cheese or nutritional yeast for that cheesy flavor. It won’t be exactly the same, but it’s a delicious and hearty alternative.

What side dishes pair best with this casserole?

I love pairing it with simple green salads, roasted veggies, or even some crusty bread to soak up extra sauce. Something fresh and crisp helps balance the richness of the casserole perfectly.

Can I prepare parts of this casserole ahead of time?

Definitely! You can brown the beef and sauté the veggies a day ahead, then assemble and bake just before dinner. This cuts down on your active cooking time and makes weeknight dinners a breeze.

Conclusion

I can’t recommend this Unstuffed Bell Pepper Casserole with Ground Beef Recipe enough. It’s one of those dishes that feels like a warm hug on a plate—simple, satisfying, and full of flavor every single time. Whether you’re feeding a family, prepping for a week of meals, or just craving some comfort food, this casserole delivers big in taste and ease. I hope you enjoy making and sharing it as much as I do!