Cheesy Stuffed Pepper Casserole with Ground Beef and Rice
Ingredients
Method
- Preheat your oven to 350°F (175°C) and lightly grease a 9x13-inch baking dish with nonstick spray or butter.
- Heat the olive oil in a large skillet over medium heat. Add the ground beef and cook, breaking it up with a spoon, until browned and no longer pink. Drain off any excess grease if needed.
- Stir in the diced onion and garlic and cook for 2 to 3 minutes, until fragrant and the onion turns translucent.
- Add the chopped bell peppers, Italian seasoning, paprika, salt, and pepper. Cook for another 3 to 4 minutes, stirring occasionally, until the peppers begin to soften.
- Mix in the uncooked rice, diced tomatoes with their juices, tomato paste, and beef broth. Stir well until the tomato paste is fully incorporated.
- Pour the mixture into the prepared baking dish and spread it into an even layer.
- Cover the dish tightly with foil and bake for 35 to 40 minutes, until the rice is tender and has absorbed most of the liquid.
- Remove the foil, sprinkle the shredded cheese evenly over the top, and bake uncovered for about 10 minutes more, until the cheese is melted and bubbly.
- Let the casserole rest for 5 minutes, then sprinkle with chopped parsley and serve warm.
Nutrition
Notes
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Let us know how it was!Why This Recipe Works
I love traditional stuffed peppers. The classic ones, where you blanch whole bell peppers, carefully spoon in the filling, and hope they don’t collapse. But I never actually make them. It’s so fiddly. All that standing over a steaming pot, and then the filling spills out anyway. By the time dinner’s ready, I’m completely over it.
This stuffed pepper casserole fixes all of that. Same cozy flavors, sweet bell peppers, seasoned ground beef, fluffy rice, rich tomato sauce, melted cheese, but zero fuss. You chop, you stir, and the oven handles the rest.
And honestly? With school starting back up in August, this is the dinner that saves the week. It’s a true one pan stuffed pepper casserole. Fifteen minutes of hands-on prep, then you walk away. No boiling rice in a separate pot. No babysitting a skillet. Just a quick stir and a whole lot of waiting.
Here’s the thing. My first attempt at a stuffed pepper casserole came out watery, and I almost threw the whole dish out. It tasted fine, but looked sad. After a few redo’s, I figured out what works, and it mostly comes down to using uncooked rice that soaks up the broth as it bakes. That one change turns a soggy mess into a perfectly set, scoopable dinner.
- One pan from stove to oven, so cleanup takes minutes, not a whole evening
- No precooked rice needed, it absorbs the beef broth as it bakes
- Budget friendly, most ingredients are pantry staples from Vons or Costco
- Family friendly, kids ask for seconds before they realize it’s full of peppers
Ingredients for Stuffed Pepper Casserole
The shopping list for this stuffed pepper casserole is short, and honestly, most of it’s probably already in your pantry. Ground beef, bell peppers, onion, garlic, long-grain white rice, beef broth, diced tomatoes, tomato paste, Italian seasoning, paprika, and a nice pile of shredded cheese.
A few notes before you start shopping:
- Bell peppers: Any color works. Red and orange are sweeter, green is the classic, more bitter version. I like a mix. Late-summer peppers at the farmers market are peak sweet and cheap, so grab a bunch.
- Rice: Long-grain white rice is the winner here. It stays separate and fluffy. Instant rice turns to mush, and short-grain gets gummy. More on swaps down below.
- Cheese: Cheddar, Monterey Jack, mozzarella, pepper jack. Whatever you have. Pre-shredded works in a pinch, but freshly shredded melts much smoother. That’s a tradeoff worth making.
- Ground beef: 80/20 has the most flavor. Just drain the extra fat after browning. Ground turkey or chicken works too if you want a lighter ground beef casserole recipe.
How to Make Stuffed Pepper Casserole
This stuffed pepper casserole comes together in a single skillet, then slides into a 9×13 baking dish. Here’s the flow, in four big stages, so you know what to expect before you start.
Stage 1: Brown the beef. Heat the olive oil in a large skillet over medium heat. Add the ground beef and break it up with a wooden spoon as it browns. That savory smell rolling through the kitchen is the moment everyone starts wandering in to ask what’s for dinner. Drain off the excess grease. I used to skip that, and it made everything greasy. Don’t skip it.
Stage 2: Sauté the aromatics and peppers. Stir in the diced onion and garlic, and let them cook for a couple of minutes until the onion turns translucent and the garlic smells like it’s doing something good. Then add the chopped bell peppers, Italian seasoning, paprika, salt, and pepper. The peppers soften and sweeten as they cook, turning glossy in the oil. Go easy on the salt, the broth and tomatoes bring some of their own.
Stage 3: Stir everything together. Add the uncooked rice, diced tomatoes with their juices, tomato paste, and beef broth. Stir until the tomato paste melts into everything, leaving a rich, brick-red sauce with no lumps. Pour it all into a lightly greased 9×13 baking dish. Or use a 12-inch oven-proof skillet and skip the baking dish entirely. That’s my favorite move when I want an even truer one pan dinner.
Stage 4: Bake, cheese, rest. Cover the dish tightly with foil and bake at 350°F for 35 to 40 minutes, until the rice is tender and has soaked up most of the liquid. Pull it out, uncover it, and shower the top with shredded cheese. Back in the oven, uncovered, for about 10 minutes, until the cheese is melted and bubbling at the edges. Let it rest for 5 minutes before scooping. That rest settles everything so you don’t end up with a sloppy pile. Finish with fresh parsley.
Expert Tips for the Best Casserole
I made a lot of versions of this stuffed pepper casserole before landing on the good one. Here’s what I learned the hard way, so you don’t have to:
- ❌ Instant rice. It turns to mush in the oven.
✅ Use uncooked long-grain white rice. It cooks perfectly in the broth and stays fluffy. - ❌ Skipping the tomato paste. The sauce comes out thin and bland.
✅ Stir it in thoroughly. It thickens everything and adds real depth. - ❌ Not draining the beef. Greasy, heavy casserole.
✅ Spoon off the excess fat after browning. Your stomach will thank you. - ❌ Not testing the rice. It looks done but the grains are still crunchy.
✅ Taste a grain before adding the cheese. If it needs more time, add a splash of broth, cover, and bake 5 minutes longer.
That last one is the big one. Every oven runs a little differently, so trust the rice, not just the clock. How long to bake casserole at 350? Covered for 35 to 40 minutes, then uncovered for about 10. But the rice is the real test.
Stuffed Pepper Casserole Variations
This stuffed pepper casserole is a fantastic base, and it’s honestly fun to play with. Here are some of my favorite remixes:
- Ground turkey or chicken: Swap it straight in for the beef. No other changes needed, it’s a great ground turkey stuffed pepper casserole for lighter nights.
- Vegetarian: Use a plant-based crumble or a can of drained white beans instead of the beef. Pull back on the broth a little, since beans don’t release the same liquid.
- Keto or low-carb: Swap the rice for cauliflower rice and seriously cut back the liquid. Different texture, same great flavor. This keto stuffed pepper casserole hack is everywhere for a reason.
- Spicy: Use pepper jack cheese on top, or try diced tomatoes with green chilies for heat.
- Leftover rice: Got cooked rice in the fridge? You can stir it in, just reduce the broth by about half since it won’t absorb as much.
For brown rice? It works, but give it more room. Add about a half cup of extra broth and bake 10 to 15 minutes longer. Same idea with quinoa if that’s what you have. Just keep an eye on the liquid and test early.
How to Store and Reheat Leftovers
Leftover stuffed pepper casserole is lowkey a gift. It’s a freezer friendly casserole that reheats beautifully, which makes it a perfect make ahead school night dinner.
- Fridge: Airtight container, up to 4 days. Great for lunch the next day.
- Freezer: Freeze individual portions or the whole dish for up to 3 months. Thaw overnight in the fridge before reheating.
- Reheat: Microwave single servings until hot. For a bigger batch, cover with foil and reheat at 350°F for 20 to 30 minutes. Frozen needs a few extra minutes.
I won’t lie, the leftovers might actually be better. The flavors settle overnight, and the whole dish tastes deeper and richer the next day. This cheesy ground beef casserole reheats like a champ.
What to Serve with Stuffed Pepper Casserole
Since this stuffed pepper casserole already has protein, carbs, and vegetables in one dish, you don’t need much on the side. But if you want to round it out:
- A crisp green salad with a bright vinaigrette to cut the richness
- Crusty bread or rolls for sopping up any extra tomato sauce
- Roasted summer vegetables, zucchini or corn are perfect in August
- A dollop of Greek yogurt or sour cream on top, if that’s your thing
Frequently Asked Questions
This stuffed pepper casserole has become a regular in my weeknight rotation, and I have a feeling it’ll stick in yours too. When you make it, and you will, come back and tell me how it went. I’d love to hear what swaps you tried. And if you want to keep this one handy for the school year, I’m over on Pinterest pinning comfort food casseroles and quick dinners every week. Come find me and save it for later.
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