Name: Stuffed Pepper Casserole with Beef and Cheddar Recipe
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 1 pound ground beef, lean; 1 yellow onion, small; diced; 3-4 garlic cloves, minced; 3 small bell peppers, seeded and diced; Kosher salt, to taste; Ground black pepper, to taste; 1 tablespoon smoked paprika; 1 teaspoon thyme, dried; 14.5 ounces diced tomatoes, 1 can; 1 cup beef broth; 3-4 tablespoons red pepper paste or harissa; 1 ½ cup cheddar cheese, shredded and divided; 1 cup cooked brown rice; Parsley, freshly chopped; optional

There’s just something so cozy about a dish like stuffed pepper casserole all wrapped up with melty cheddar and hearty beef. This Stuffed Pepper Casserole with Beef and Cheddar Recipe strikes the perfect balance of comfort and flavor, making it a go-to for weeknight dinners or casual gatherings with friends. Trust me, once you try it, you’ll want to keep this one in regular rotation.

The image shows a close-up of a rice dish in a white dish with cooked ground meat mixed with colorful chopped bell peppers in red, green, yellow, and orange. There are bits of melted yellow cheese spread thinly all over, blending with the brown meat and white rice. A white spoon holds a scoop of the mix, showing a combination of the rice, meat, cheese, and bright vegetables, all sprinkled with small green herbs. The background is a white marbled surface. photo taken with an iphone --ar 2:3 --v 7

Jump to:

Why You'll Love This Recipe
Ingredients & Why They Work
Make It Your Way
Step-by-Step: How I Make Stuffed Pepper Casserole with Beef and Cheddar Recipe
Top Tip
How to Serve Stuffed Pepper Casserole with Beef and Cheddar Recipe
Make Ahead and Storage
Frequently Asked Questions:
Final Thoughts
Stuffed Pepper Casserole with Beef and Cheddar Recipe

Why You'll Love This Recipe

What I adore about this stuffed pepper casserole with beef and cheddar recipe is that it captures the essence of stuffed peppers but bypasses all the fiddly prep. It’s fuss-free, delicious, and hits all the right notes—meaty, cheesy, and just a little spicy.

One-dish convenience: Everything bakes together in one pan—you save time on clean-up and hands-on cooking.
Comfort food transformed: It captures those classic flavors with a kick of smoked paprika and red pepper paste.
Customizable to your taste: Love more cheese or want it spicier? You can tweak this recipe easily.
Nutritious and satisfying: The mix of lean ground beef, brown rice, and bell peppers makes it hearty without being heavy.

Ingredients & Why They Work

Each ingredient in this stuffed pepper casserole with beef and cheddar recipe plays its part perfectly—from the savory spices to the fresh peppers—and I like to pick good-quality elements to ensure a rich final dish. Here’s what I use and why:

Flat lay of a mound of fresh lean ground beef, a small diced yellow onion, three peeled garlic cloves, a small white bowl of coarse kosher salt, a small white bowl of ground black pepper, a small white bowl filled with smoked paprika powder, a teaspoon of dried thyme scattered naturally, a simple white bowl with bright red diced tomatoes, a small white bowl filled with rich beef broth, a small white bowl holding vibrant deep red harissa paste, a neat pile of shredded orange cheddar cheese, a small heap of cooked brown rice, three fresh small diced bell peppers in red, yellow, and green colors, and a small pile of freshly chopped green parsley leaves, all arranged symmetrically on a simple white ceramic plate and bowls, placed on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p m7354615311229779997

Ground beef: Lean beef keeps it hearty but not greasy, giving a wonderful meaty base.
Yellow onion: Adds sweetness and depth when sautéed with garlic.
Garlic cloves: Garlic infuses the meat with aroma and savory flavor.
Smoked paprika: Gives warmth and a subtle smoky note without heat.
Dried thyme: Offers an herbal earthiness to balance the richness.
Diced tomatoes: Adds acidity and moisture to keep everything juicy.
Beef broth: Builds a savory sauce base to tie flavors together.
Red pepper paste or harissa: Brings gentle heat and complexity—start with less if you're nervous about spice.
Cheddar cheese: Sharp and melty, this cheese gives a gorgeous golden topping.
Cooked brown rice: A nutty, hearty filler that soaks up those delicious juices.
Bell peppers: Use any colors you like for sweetness and crunch—you’ll want them diced small for even baking.
Parsley: Fresh parsley at the end brightens and adds color—totally optional but I love it.

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Note: You'll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Make It Your Way

One of the joys of this stuffed pepper casserole with beef and cheddar recipe is how easy it is to customize. I’ve tried swapping cheddar for pepper jack to add a little extra zing, and it didn’t disappoint. Feel free to adjust the spice level or mix in some veggies you have on hand.

Variation: I sometimes swap brown rice for quinoa to add a slightly nuttier texture—my family loved it!
Spice it up: Increase the red pepper paste or toss in chopped jalapeños if you want some heat.
Cheese options: Gruyère or mozzarella work beautifully too if you're after a creamier melt.
Make it vegetarian: Replace beef with lentils and vegetable broth for a satisfying plant-based version.

Step-by-Step: How I Make Stuffed Pepper Casserole with Beef and Cheddar Recipe

A white bowl filled with a mixed dish showing three main layers: a base of cooked rice with white and light brown grains, a middle layer of small brown meat pieces mixed evenly throughout, and colorful chunks of yellow and green bell peppers scattered on top. Small bits of red tomatoes and green herbs are mixed inside, giving the dish a fresh, vibrant look. A silver fork sticks out from the bowl to the left side, and a red and white striped cloth is placed nearby on a white marbled surface. Photo taken with an iphone --ar 2:3 --v 7

Step 1: Brown the beef and build the flavor

Start by heating your skillet over medium heat, then add the lean ground beef. Use a wooden spoon to break it apart as it cooks evenly. When it just begins to brown, toss in the diced onion, minced garlic, kosher salt, black pepper, smoked paprika, and thyme. Stir frequently so everything gets coated and aromatic. This step is all about layering flavor — don’t rush it or the onions won’t soften properly.

Step 2: Simmer the sauce to thicken

Once your beef is beautifully brown, mix in the diced tomatoes, beef broth, and red pepper paste. Bring it all to a lively boil, then reduce the heat and let it simmer. Stir occasionally and cook until the liquid reduces by half—that usually takes around 8 minutes. This thickening is what makes the sauce cling to every bite in the casserole.

Step 3: Layer your casserole for baking

Grab your baking dish and spread half of the meat mixture across the bottom. Sprinkle over half of the cooked brown rice, diced bell peppers, and some diced onion if you saved extra. Top with half of the shredded cheddar. Repeat the layers with the remaining ingredients so the casserole is balanced and filling. The layering helps meld all the flavors together during baking.

Step 4: Bake until bubbly and golden

Pop the casserole into a 375°F oven and bake for 30 to 40 minutes. You want it bubbling nicely and the cheese topping turning golden brown. If you notice the top browning too fast, just tent it loosely with foil. Once it’s done, remove and let it rest for a few minutes before serving—this helps it set so it slices neatly.

Top Tip

Over time, I’ve learned that success with this stuffed pepper casserole with beef and cheddar recipe really hinges on managing moisture and seasoning carefully. Here are my go-to tips that make a difference:

Rice readiness: Always ensure your brown rice is fully cooked and cooled before layering—it prevents a soggy casserole.
Layer evenly: Distribute peppers and cheese evenly to get a balanced bite throughout the casserole.
Red pepper paste moderation: Start with less—it’s easy to add more later but can overpower if used excessively.
Rest before serving: Let the casserole stand 10 minutes after baking—it firms up and slices perfectly without falling apart.

How to Serve Stuffed Pepper Casserole with Beef and Cheddar Recipe

Stuffed Pepper Casserole - Serving Suggestion

Garnishes

I love finishing this casserole with a handful of fresh parsley. It adds a pop of green and freshness that balances the rich flavors. Sometimes, I’ll sprinkle a bit of extra shredded cheese before serving, if we’re feeling indulgent. A dollop of sour cream or a drizzle of hot sauce also makes for great options if you like some creaminess or heat on the side.

Side Dishes

To round out the meal, I often serve it alongside a simple green salad with lemon vinaigrette or roasted vegetables like asparagus or broccoli. A crusty piece of garlic bread is perfect for soaking up any extra cheesy juices from the casserole—it’s a total crowd-pleaser.

Creative Ways to Present

For parties, try baking the casserole in individual ramekins or small, single-serving baking dishes. It looks festive and makes portion control easy. Another fun twist is to serve it inside hollowed-out bell peppers for a charming presentation, especially great if you want to impress guests with a rustic yet elegant meal.

Make Ahead and Storage

Storing Leftovers

Once cooled, I transfer leftover casserole to an airtight container and pop it in the fridge. It keeps well for 3 to 4 days, making weekday lunches or quick dinners super convenient. Reheating in the oven or microwave works well—just cover to retain moisture.

Freezing

This casserole freezes beautifully. I usually portion it into freezer-safe containers or wrap tightly in foil and plastic wrap. When sealed properly, it keeps for up to 3 months. Just thaw overnight in the fridge before reheating, and it tastes almost as good as fresh!

Reheating

To reheat, I like to cover the casserole with foil and bake at 350°F until warmed through—about 20 minutes. This keeps the cheese melty without drying out. Microwaving is quicker but can sometimes cause the rice to dry a little, so a splash of broth or covering the dish helps preserve moisture.

Frequently Asked Questions:

Can I make this stuffed pepper casserole vegetarian?

Absolutely! Swap the ground beef with cooked lentils, chickpeas, or your favorite plant-based meat substitute and use vegetable broth instead of beef broth. The spices and cheese will still offer a delicious flavor-packed experience.

What kind of cheese is best for this casserole?

Cheddar is a great choice for its sharpness and melting properties, but you can also try mozzarella for a milder, creamy finish or pepper jack if you want a bit of spice. Mixing cheeses can add a lovely depth of flavor too.

Can I prepare this recipe ahead of time?

Yes, you can prepare the meat mixture and cook the rice ahead of time. Assemble the casserole just before baking to keep the ingredients fresh. Alternatively, assemble everything and refrigerate overnight; just add a few extra minutes to the baking time.

How do I prevent the casserole from becoming soggy?

Be sure to fully cook and cool your rice before layering it in the casserole. Also, simmer the sauce until it reduces by half to concentrate the flavors and prevent excess moisture. Avoid using watery canned tomatoes or drain slightly if needed.

Final Thoughts

This stuffed pepper casserole with beef and cheddar recipe has become one of my favorite weeknight heroes because it’s easy, satisfying, and endlessly adaptable. I find that sharing it with friends or family always brings a sense of warmth and comfort to the table. So next time you want a flavorful meal that doesn’t demand hours in the kitchen, give this recipe a try—you might just find yourself making it again and again, like I do.