These cheesy ground beef stuffed peppers are the kind of dinner you can count on when you want something hearty but not heavy. They come together with pantry staples and a little oven time, no fussy techniques.

The filling is a simple mix of browned beef, fluffy rice, and tomato sauce, all tucked into sweet bell peppers that soften just enough in the oven. A blanket of melted mozzarella on top seals the deal.

Why These Stuffed Peppers Work

I keep coming back to this version because it has zero filler ingredients and plenty of flavor without a long ingredient list. The rice soaks up the beef juices and tomato sauce as it bakes, so every bite tastes cohesive, not like separate components.

The peppers are parcooked just enough that they turn tender without collapsing into mush. You get a clean, neat stuffed pepper that holds its shape, and the cheese on top gets browned and bubbly, which makes it feel a little special even on a Tuesday.

Ingredients

4 large bell peppers: any color you like. Red and yellow are sweeter, green has a sharper bite.
1 lb 80/20 ground beef: the higher fat content keeps the filling moist.
1 tbsp olive oil: for browning the beef.
1 small yellow onion, diced: about 3/4 cup.
3 garlic cloves, minced: fresh garlic gives the best savory punch.
1 cup cooked white rice: leftover rice or a fresh batch, just make sure it’s already cooked and cooled a bit.
8 oz canned tomato sauce: plain, unseasoned sauce works best for controlling the salt.
1 tbsp Worcestershire sauce: adds a deep, savory note.
1 tsp dried Italian seasoning: a reliable herb blend that works without having to open four jars.
1 tsp kosher salt, plus more for the water.
1/2 tsp black pepper.
1 cup shredded low-moisture mozzarella: melts into a stretchy, golden layer. You can swap in Monterey Jack or provolone.
Chopped fresh parsley: for a fresh finish, optional.

Variations / Substitutions

Protein: ground turkey or chicken work well, just add an extra tablespoon of olive oil when browning so the filling stays juicy.
Herb swap: sub dried oregano or a teaspoon of smoked paprika for the Italian seasoning if you want a different direction.
A little heat: stir 1/4 teaspoon red pepper flakes into the beef as it cooks.
Dairy-free: skip the cheese entirely or use your favorite shredded dairy-free mozzarella; the peppers will still taste great with just the savory filling.
Add some tang: a teaspoon of red vinegar stirred into the finished filling brightens everything up.

Ground Beef Ramen makes a comforting soup to pair with these stuffed peppers.

How To Make Cheesy Ground Beef Stuffed Peppers

Step 1: Par-cook the Peppers

Preheat your oven to 375°F (190°C) and set a large pot of salted water on the stove to boil. While the water heats, cut 4 bell peppers in half lengthwise from stem to base. Pull out the seeds and the white pith, leaving the stems attached if you like the look of whole halves.

Once the water is at a rolling boil, add the pepper halves and cook for exactly 3 to 4 minutes. They should still feel firm in the center but look a shade brighter. Drain them cut side down on a clean towel so any trapped water runs out. This quick blanching softens the peppers just enough that they finish in the oven without getting mushy.

Step 2: Brown the Beef

Warm 1 tablespoon olive oil in a large skillet over medium-high heat. Add the 1 lb ground beef, season with 1 teaspoon kosher salt and 1/2 teaspoon black pepper, and break it apart with a spoon. Cook for 6 to 8 minutes, until no pink remains and the bottom of the pan has some browned bits.

Transfer the beef to a plate with a slotted spoon, leaving a thin layer of fat in the skillet. Add the diced onion and cook for 3 minutes until it softens and turns translucent. Toss in the minced garlic and stir for 30 seconds, just until fragrant. Return the beef to the skillet and give everything a quick toss.

Step 3: Build the Filling

Pour 8 oz tomato sauce, 1 cup cooked rice, 1 tablespoon Worcestershire sauce, and 1 teaspoon Italian seasoning into the skillet. Stir well and let the whole mixture bubble gently for 2 to 3 minutes so the rice absorbs some of the sauce and the flavors meld.

Taste a spoonful and add a pinch more salt if it needs it. The filling should be moist but not soupy, with a rich tomato scent that fills the kitchen. Turn off the heat and let it sit while you ready the peppers.

Step 4: Stuff the Peppers

Arrange the drained pepper halves in a 9×13 inch baking dish, cut side up. Spoon the beef mixture into each half, packing it in gently and mounding it a little over the top. You should be able to fill all 8 halves with the filling puffed up just above the rim.

Pour about 1/4 cup of water into the bottom of the dish, right around the peppers. This steams them as they bake and keeps the peppers from drying out without making the filling soggy.

Step 5: Bake and Melt the Cheese

Cover the dish tightly with foil and bake for 20 minutes. The steam will finish cooking the peppers through.

Remove the foil, sprinkle 1 cup shredded mozzarella evenly over the tops of the peppers, and slide the dish back into the oven uncovered. Bake for another 10 to 15 minutes, until the cheese is fully melted and the edges are just starting to turn golden. If you want a deeper brown top, switch to broil for 1 to 2 minutes but keep a close eye so the cheese does not burn. Scatter chopped parsley over the dish and serve the peppers while they are piping hot.

A Few Tips Before You Start

Pick peppers with flat, even bottoms. That way they sit upright in the dish without tipping over and spilling filling into the water bath.
Using rice that is cold or at room temperature makes it easier to stir into the beef without clumping.
If your tomato sauce is very thick, thin it with a tablespoon or two of water so the filling stays saucy.
For a crisper cheese top, switch to a coarser shred or use a block you grate yourself, which melts into a thicker, stretchier layer than pre-shredded cheese.

How to Store and Reheat Stuffed Peppers

Refrigerate: Store leftover peppers in a sealed container for up to 4 days. The flavors actually get better overnight.
Reheating: Reheat in a 350°F oven for 12 to 15 minutes until warmed through, or microwave individual portions in 1-minute bursts.
Freezing: You can freeze baked stuffed peppers for up to 3 months. Wrap each half separately in foil, then place them in a freezer bag. Reheat from frozen in a 375°F oven for about 30 minutes.

What to Serve with Stuffed Peppers

A crisp green salad with a lemon vinaigrette is my go-to, the acidity cuts through the richness of the cheese and beef. Garlic bread or crusty rolls are great for sopping up any tomato sauce that pools in the baking dish. For something lighter, roasted broccoli or green beans tossed with salt and olive oil round out the plate without competing flavors.

Frequently Asked Questions

Can I assemble these ahead of time?

Yes. Stuff the peppers, cover with foil, and refrigerate for up to 24 hours. Add 10 minutes to the covered bake time straight from the fridge, then uncover and add cheese as usual.

Can I use uncooked rice instead of cooked?

Not without changing the recipe. Uncooked rice needs more liquid and a longer bake, which will overcook the peppers. Stick with already cooked rice for the best texture.

What other grains work in the filling?

Quinoa, farro, or even couscous can replace the rice. Just make sure the grain is fully cooked before you stir it in, and adjust the salt if the grain itself is already seasoned.

Can I freeze the stuffed peppers before baking?

It works better to freeze them after baking. Raw peppers release too much water as they freeze and thaw, which makes the filling watery. Bake them first, then freeze as described in the storage section.