Cheesesteak Stuffed Peppers combine two beloved classics into a satisfying, low-carb weeknight dinner. Roasted bell peppers are filled with tender strips of beef, caramelized onions, earthy mushrooms, and finished with melted cheese for a meal that delivers all the flavor of a cheesesteak without the bread.

Keto Cheesesteak Stuffed Peppers
Stuffed peppers are one of those dependable dishes I keep returning to. The natural cup-like shape of bell peppers makes them ideal for holding a variety of fillings, and their flavor pairs well with meats, vegetables, and cheeses. This recipe takes the familiar elements of a Philly-style cheesesteak — steak, onions, mushrooms, and melty cheese — and turns them into a gluten-free, low-carb dinner that’s ready in under an hour.
When I develop new healthy recipes, peppers often come to mind because they’re versatile, colorful, and satisfying. These cheesesteak stuffed peppers are simple to assemble and bake, and they make a great option for meal prep or feeding a hungry family. They travel well for lunches and reheat nicely, too.

What goes on a traditional cheesesteak?
Classic cheesesteaks from Philadelphia typically include thinly sliced steak, onions, and cheese. Some versions add mushrooms or hot cherry peppers, but bell peppers aren’t common on the original sandwich. That said, these stuffed peppers aren’t trying to be an exact replica; they’re a riff on the flavors you love, presented in a low-carb, vegetable-forward format. If you prefer a purist approach, skip the bell peppers and enjoy the filling on a traditional roll. If you’re open to a twist, these keep the spirit of a cheesesteak while adding visual appeal and extra nutrients.
Either way, the most important parts are well-cooked meat, deeply caramelized onions, and plenty of melty cheese. Those elements are what make this dish comforting and familiar.
If you enjoy stuffed dishes, you might also like other stuffed recipes: for example, savory pork rolled with flavorful fillings or squash filled with sausage and spices. Stuffed mains are a great way to pack in vegetables while still delivering hearty protein and satisfying textures.

Do I have to use mushrooms in low carb stuffed peppers?
No — mushrooms are optional. They add bulk, texture, umami, and a little extra fiber and protein, which is why I like including them. If you don’t like mushrooms or have an allergy, simply omit them or substitute with another vegetable such as zucchini, extra onions, or diced bell pepper. The recipe adapts well to substitutions and still tastes great without mushrooms.
If you’re introducing mushrooms to your diet for the first time, try slicing and caramelizing them until golden brown; this brings out a rich, savory flavor that many people find more appealing than raw mushrooms.

What’s the best cheese for Philly cheesesteak stuffed peppers?
Provolone is my top choice: it melts beautifully and adds a smooth, mild flavor that complements the beef and onions. Traditional cheesesteaks often use American cheese or Cheese Whiz; American cheese from the deli counter (sliced, not processed singles) works well if you want a classic feel. If you prefer, try mozzarella or muenster for a milder, stretchy melt. Avoid overly strong cheeses unless you want them to dominate the dish.
Choose a cheese that melts evenly and pairs with your seasoning preferences. If you like a little tang, provolone or muenster are excellent; if you want creamy and classic, go with American-style slices from the deli.
Variations on cheesesteak stuffed peppers
This recipe is very versatile. Here are easy ways to change things up:
- Swap shredded or cubed chicken for the beef; toss the chicken in Buffalo sauce for a spicy twist.
- Use ground turkey, ground beef, or ground chicken instead of sliced steak for a quicker filling.
- Add a teaspoon of taco seasoning for a southwest-inspired flavor profile.
- Stir in a splash of Worcestershire sauce to deepen the savory notes.
- Dice extra bell pepper and cook it with the meat and onions to add more color and crunch.
- If you’re not following a low-carb diet, mix in cooked brown rice to stretch the filling further.

How do I keep my peppers from falling over?
Look for wide, flat-bottomed peppers when you can. If your peppers are a bit wobbly, try one of these fixes:
- Trim a thin slice from the bottom so the pepper sits flat on the baking dish.
- Make small foil rings and nestle the peppers inside them to stabilize each pepper during baking.


Cheesesteak Stuffed Peppers
Ingredients
- 3 large bell peppers halved
- 1 Tablespoon olive oil
- 8 oz cremini mushrooms sliced
- ½ onion diced
- 1 pound sirloin steak trimmed and cut into strips
- 12 slices Provolone cheese
- Salt and pepper
Instructions
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Preheat the oven to 400°F (200°C). Arrange the pepper halves cut-side up in a large baking dish.
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Heat the olive oil in a large skillet over medium-high heat. Add the sliced mushrooms and cook 3–5 minutes until they release their moisture and turn deeply browned. Add the diced onion and continue cooking until the onions are golden and soft.
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Transfer the mushrooms and onions to a plate. Return the skillet to the stove, add the steak strips, and season with salt and pepper. Cook 2–3 minutes per side until browned. Stir the cooked mushrooms and onions back into the steak so everything is combined.
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Place one slice of provolone inside each pepper half. Spoon the steak mixture into the peppers, then top each with a second slice of cheese.
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Bake for 25–30 minutes, until the peppers are tender and the cheese is melted and bubbly. Let cool for a few minutes before serving.
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