You want dinner that hits like comfort food but won’t wreck your carbs. This is it. These Low Carb Stuffed Bell Peppers with Lean Ground Beef are juicy, cheesy, and wildly satisfying—without the rice, regrets, or 9 p.m. snack attacks.
We’re talking weeknight-friendly, macro-friendly, and flavor-forward. Think burger-meets-taco-meets-Italian-nonna, packaged in a vegetable. You’ll feel like you “hacked” dinner—because you did.
Why This Recipe Works

- Low-carb strategy: Skip the rice and use riced cauliflower, chopped mushrooms, or just go meat-and-veggie.
You get volume and texture without the carb crash.
- Lean beef = clean fuel: 90–96% lean ground beef builds a rich, meaty base with fewer calories and less grease. You get protein power, not a grease pond.
- Flavor layering: Onion, garlic, tomato paste, and a spice blend concentrate into a savory filling. The peppers steam-roast, turning sweet and tender.
Win-win.
- One-pan + hands-off bake: Quick skillet prep, then the oven does the rest. Minimal dishes, maximal return.
- Melted cheese seal: A final layer of cheese locks in moisture and adds a melty, golden crust. Because you’re human.
Shopping List – Ingredients
- 4 large bell peppers (any color; red and yellow are sweeter)
- 1 lb lean ground beef (90–96% lean)
- 1 cup riced cauliflower (fresh or frozen, optional but great for volume)
- 1 small onion, finely diced
- 3 cloves garlic, minced
- 1 cup canned diced tomatoes (drained) or crushed tomatoes
- 2 tbsp tomato paste
- 1 tbsp olive oil
- 1 tsp smoked paprika
- 1 tsp dried oregano
- 1/2 tsp ground cumin
- 1/2 tsp red pepper flakes (optional)
- Salt and black pepper to taste
- 1/2 cup shredded mozzarella (or provolone)
- 1/4 cup grated Parmesan
- Fresh parsley or basil, chopped, for garnish
- Optional boosters: 1/2 cup chopped mushrooms, 1/2 cup chopped spinach, 1 tbsp Worcestershire or coconut aminos
Cooking Instructions

- Preheat and prep peppers: Heat oven to 375°F (190°C).
Slice the tops off the bell peppers and remove seeds and membranes. If they wobble, shave a thin layer off the bottoms so they stand upright.
- Par-cook peppers: Place peppers in a baking dish, drizzle with a little olive oil, and season with salt. Bake for 10 minutes to soften slightly.
Remove and set aside.
- Sauté aromatics: In a large skillet over medium heat, warm 1 tbsp olive oil. Add onion and a pinch of salt; cook 3–4 minutes until translucent. Stir in garlic; cook 30 seconds until fragrant.
- Brown the beef: Add lean ground beef.
Season with salt, pepper, smoked paprika, oregano, cumin, and red pepper flakes. Cook, breaking up with a spoon, until browned and crumbly, 5–7 minutes. Drain any excess liquid if needed.
- Build the sauce: Stir in tomato paste and cook 1 minute to caramelize.
Add diced or crushed tomatoes and optional Worcestershire or aminos. Simmer 3–4 minutes to thicken.
- Bulk it smart: Fold in riced cauliflower (and mushrooms/spinach if using). Cook 2–3 minutes until tender and most moisture has evaporated.
Taste and adjust salt and pepper.
- Stuff the peppers: Spoon the beef mixture into each pepper, packing firmly. Top with mozzarella and Parmesan.
- Bake to perfection: Add 1/4 inch water to the baking dish (helps steam and keep peppers tender). Cover loosely with foil and bake 15 minutes.
Remove foil and bake another 10–12 minutes until cheese is melted and lightly golden.
- Finish and serve: Rest 5 minutes. Garnish with chopped parsley or basil. Serve hot.
Preservation Guide
- Fridge: Store in an airtight container for up to 4 days.
Reheat covered at 350°F (175°C) for 12–15 minutes or microwave in 60-second bursts.
- Freezer: Wrap each cooled stuffed pepper tightly, then place in a freezer bag. Freeze up to 3 months. Thaw overnight in the fridge, then reheat at 350°F covered for 20–25 minutes.
- Meal prep tip: Bake peppers without cheese, refrigerate or freeze, then add cheese before reheating for fresher melt and less moisture.

Why This is Good for You
- High protein, low carb: Lean beef delivers complete protein for satiety and muscle repair without the carb load of rice.
- Micronutrient-dense: Bell peppers bring vitamin C, antioxidants, and fiber; tomatoes add lycopene; herbs add polyphenols.
It’s like a multivitamin that tastes like pizza.
- Smart fats: Olive oil and a modest amount of cheese provide flavor and fat-soluble vitamin absorption without overdoing calories.
- Blood sugar friendly: Lower net carbs help reduce spikes, keeping energy steady. FYI: great for managing cravings.
Don’t Make These Errors
- Skipping the par-bake: Raw peppers take forever and stay crunchy in a not-cute way. Soften them first.
- Watery filling: Failing to cook off moisture from tomatoes, cauliflower, or mushrooms leads to soggy peppers.
Reduce until thick.
- Under-seasoning: Lean beef needs a confident spice hand. Taste as you go.
- Cheese overload: Yes, it’s delicious, but too much can make the top greasy. Balance is key, IMO.
- Using super fatty beef: Excess grease pools in the pepper.
If you use 80/20, drain thoroughly.
Mix It Up
- Tex-Mex: Swap oregano for chili powder and add cilantro and a spoon of salsa. Finish with pepper jack.
- Greek vibes: Add cinnamon pinch, oregano, lemon zest, and feta. Garnish with dill and yogurt sauce.
- Italian classic: Keep oregano, add basil and fennel seed, and finish with provolone and extra Parmesan.
- Keto-max: Skip cauliflower, add chopped bacon and spinach, and finish with a thicker cheese cap.
- Turkey or bison: Swap protein 1:1.
If using extra-lean turkey, add 1 tsp olive oil for juiciness.
FAQ
Can I make these dairy-free?
Yes. Omit cheese or use a dairy-free melt. To keep richness, add 1–2 tbsp nutritional yeast to the filling and a drizzle of olive oil before baking.
Do I have to use riced cauliflower?
Nope.
It adds volume with minimal carbs, but you can leave it out or replace it with finely chopped mushrooms or zucchini (just cook out the moisture).
How do I prevent peppers from tipping over?
Trim a super-thin slice off the bottoms so they stand flat, or nestle them in a muffin tin or tightly packed baking dish for support.
What color peppers are best?
Red and yellow are sweeter and caramelize nicely; green are slightly bitter and more savory. Choose your vibe.
Can I cook these in an air fryer?
Yes. Air fry at 360°F (182°C) for 12–15 minutes until the peppers are tender and cheese is melted.
Work in batches and keep an eye on browning.
How do I keep the filling from drying out?
Don’t overcook the beef in the skillet, maintain some sauce, and cover with foil for the first bake. The cheese cap helps trap moisture.
Are these good for meal prep?
Absolutely. They reheat well and hold structure.
Assemble and refrigerate unbaked for up to 24 hours, then bake fresh for best texture.
My Take
This is one of those recipes that punches above its weight: six ingredients could carry it, but the spice and technique make it feel restaurant-level. It’s flexible, forgiving, and secretly healthy. The kind of dish you can serve to your “I need carbs” friend and watch them ask for seconds.
Make a double batch—your future self will send a thank-you note.

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