Low-Carb Keto Cheeseburger Stuffed Peppers (Easy 30-Minute Dinner)

These stuffed peppers use mini sweet peppers filled with a seasoned ground beef mixture and finished with mozzarella. Choose peppers that are firm and large enough to hold the filling, and use freshly shredded cheese if you want it to melt smoothly.

Ingredients and Measurements

Optional cheeseburger toppings: Sugar-free ketchup, mustard, finely chopped dill pickles, or a little shredded cheddar cheese.

Mini bell peppers: These have a naturally sweet flavor that works well with savory beef. Choose firm peppers with enough room for filling. If mini peppers are unavailable, use regular bell peppers cut into smaller sections and adjust the cooking time as needed.

Ground beef: Lean ground beef helps limit excess grease, while beef with a little more fat can provide a juicier filling. If using higher-fat beef, drain excess grease after browning if you choose to pre-cook it.

Mozzarella cheese: Mozzarella melts smoothly and creates a mild, stretchy topping. Sharp cheddar gives a more traditional cheeseburger taste, and a mozzarella-cheddar blend is another good option.

Grated onion: Grated onion distributes flavor throughout the beef mixture. If you prefer a less moist filling, finely mince the onion and use a paper towel to remove excess moisture. You can substitute about 2 teaspoons of onion powder, adjusting to taste.

Egg white: The egg white helps hold the ground beef mixture together. You can omit it, but the filling may be a little looser. Avoid adding a whole extra egg unless you adjust the rest of the mixture.

Seasonings: Paprika, Italian seasoning, garlic powder, and cumin create a savory, aromatic filling. For a more classic burger profile, reduce the Italian seasoning and cumin slightly and add a little onion powder.

Cheese and keto suitability: The recipe is naturally low in carbohydrates when made with plain ingredients, but exact carbohydrate counts depend on pepper size, cheese, and serving size. Check your ingredient labels if you are tracking carbohydrates strictly.

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C). Line a rimmed baking sheet with parchment paper or lightly grease it with cooking spray.

Choose a baking sheet large enough to hold the pepper halves in a single layer without crowding them.

Step 2: Prepare the Mini Peppers

Wash and dry the peppers. Slice each one lengthwise and remove the seeds and membranes.

Arrange the pepper halves cut-side up on the prepared baking sheet. Pat the inside dry if the peppers have excess moisture.

Step 3: Mix the Beef Filling

In a large bowl, combine the ground beef, salt, black pepper, paprika, Italian seasoning, garlic powder, cumin, grated onion, and egg white.

Mix gently until the seasonings are evenly distributed. Avoid overmixing, which can make the cooked beef mixture dense.

Step 4: Fill the Pepper Halves

Divide the beef mixture among the 24 pepper halves, pressing it gently into each pepper. Keep the filling level and avoid making the portions excessively thick so the beef cooks evenly.

Wash your hands and any utensils that touched raw meat before handling cooked food or toppings.

Step 5: Bake Until the Beef Is Cooked

Place the tray in the preheated oven and bake for approximately 18–20 minutes. Cooking time will vary depending on the size of the peppers and thickness of the filling.

Check the center of the beef with a food thermometer. Ground beef should reach 160°F (71°C) for food safety. If it has not reached that temperature, continue baking and check again.

Step 6: Add the Mozzarella

Once the beef is cooked through, remove the tray carefully and sprinkle the shredded mozzarella evenly over the pepper halves.

Return the tray to the oven for about 3–4 minutes, or until the cheese melts. If you want a more golden top, use the broiler briefly, watching closely to prevent burning.

Step 7: Garnish and Serve

Let the stuffed peppers rest for a few minutes before serving. Garnish with chopped parsley or cilantro if desired.

Serve them warm with your favorite low-carb side dishes or add a little mustard, sugar-free ketchup, or chopped pickles for a stronger cheeseburger flavor.

• Choose similarly sized peppers: Uniform halves cook more evenly.
• Drain excess onion moisture: Very wet filling can release extra liquid during baking.
• Avoid overmixing the beef: Mix only until the seasonings are distributed.
• Don’t overfill the peppers: A moderate layer cooks more reliably than a thick mound.
• Use a thermometer: Ground beef needs to reach 160°F (71°C); color alone is not a reliable indicator.
• Add cheese near the end: This keeps the mozzarella from becoming overly browned before the beef finishes cooking.
• Let the peppers rest: A short rest makes them easier to lift from the tray.
• Keep raw and cooked foods separate: Use clean plates and utensils for serving.

Using very small pepper halves: Tiny peppers may not hold enough filling and can cook faster than expected. Choose peppers of similar size and adjust the filling portions.

Making the beef layer too thick: Thick portions take longer to cook. Spread the filling evenly and confirm the center reaches 160°F (71°C).

Skipping the temperature check: The peppers can look ready before the beef is fully cooked. A food thermometer is the best way to check doneness.

Adding cheese too early: Cheese may brown too much while the beef is still cooking. Add it near the end of the baking time.

Leaving excess liquid in the filling: A very watery grated onion can make the mixture loose. Drain or blot excess moisture before mixing.

Crowding the tray: Overcrowding traps moisture and makes the peppers harder to handle. Use a second baking sheet if necessary.

• Cheddar Cheeseburger Peppers: Replace the mozzarella with shredded cheddar or use a blend of both cheeses.
• Bacon Cheeseburger Peppers: Add a small amount of cooked, crumbled bacon to the beef mixture or sprinkle it over the melted cheese.
• Pickle Burger Peppers: Add finely chopped dill pickles after baking for a tangy finish.
• Spicy Cheeseburger Peppers: Add a pinch of cayenne pepper or red pepper flakes to the filling.
• Ground Turkey Version: Substitute ground turkey for beef. Season well and cook until the center reaches 165°F (74°C).
• Regular Bell Pepper Version: Use larger bell peppers cut into quarters or boats. The thicker pieces may need additional baking time.
• Dairy-Free Version: Use a suitable dairy-free shredded cheese alternative. Texture and melting will vary by product.

These stuffed peppers can be served as a main meal, appetizer, or part of a low-carb meal-prep lunch.

• Fresh green salad: Pair with leafy greens, cucumber, and a simple vinaigrette.
• Cauliflower mash: Serve alongside creamy mashed cauliflower for a comforting dinner.
• Roasted broccoli: Garlic-roasted broccoli adds color and extra vegetables.
• Cheeseburger toppings: Offer mustard, sugar-free ketchup, and chopped dill pickles on the side.
• Cauliflower rice: A simple option for a filling low-carb plate.
• More high-protein dinners: Try our High-Protein Chicken Parm Bowl or High-Protein Bowl with Juicy Steak and Crispy Potatoes.

Are cheeseburger stuffed peppers keto-friendly?

They can fit into many keto and low-carb eating plans because the recipe uses mini bell peppers instead of a bread bun. The exact net carbohydrates depend on pepper size, the amount of onion, and the cheese and beef products used.

Can I use ground turkey instead of ground beef?

Yes. Ground turkey works well as a substitute, although the flavor is milder. Season it generously and cook until the center reaches 165°F (74°C).

Can I make these stuffed peppers ahead of time?

Yes. You can prepare the peppers and filling, assemble them, and refrigerate them covered before baking. For food safety, keep them refrigerated and cook them promptly. If baking directly from the refrigerator, allow extra time and check the beef’s internal temperature.

How do I know when the beef is fully cooked?

Use a food thermometer to check the thickest part of the filling. Ground beef should reach 160°F (71°C). Do not rely on the pepper’s appearance or the beef’s color alone.

Can I use cheddar instead of mozzarella?

Absolutely. Cheddar gives the peppers a sharper, more traditional cheeseburger flavor. You can also combine cheddar and mozzarella for flavor and meltability.

Can I freeze keto cheeseburger stuffed peppers?

Yes. Cool them, place them in a freezer-safe airtight container, and freeze for best quality for about 2–3 months. Thaw in the refrigerator and reheat until the center reaches 165°F (74°C). The peppers may be softer after freezing.

Why are my stuffed peppers watery?

Excess moisture can come from the peppers, grated onion, or higher-fat ground beef. Pat the peppers dry, drain very wet onion, and remove excess grease if needed.

What can I serve with cheeseburger stuffed peppers?

Try a green salad, roasted broccoli, cauliflower mash, or cauliflower rice. For a classic burger-inspired finish, serve with mustard, sugar-free ketchup, or chopped dill pickles.