Beef and Spinach Stuffed Bell Peppers with Mozzarella

By AislePrompt Editorial · Published 2026-05-10 · Updated 2026-05-10

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are drafted and published.

Bell peppers filled with savory ground beef, sautéed spinach, and melted mozzarella make a satisfying keto meal with balanced fats and protein. This Mediterranean-inspired keto recipe (low carb), ready in about 50 minutes, pairs large bell peppers, ground beef, fresh spinach for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 calories and feeds 4, so it slots cleanly into a low-carb week and pairs well with cauliflower rice or roasted green vegetables. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 35 min Serves 4 Mediterranean cuisine 420 cal/serving

Build a week of meals around this recipe → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

4, halved and seeded large bell peppers
1 lb (80% lean) ground beef
3 cups chopped fresh spinach
1 tbsp olive oil
1 small, finely diced onion
2 minced garlic cloves
2 tbsp tomato paste
1 cup shredded mozzarella cheese
1 tsp salt
1/2 tsp black pepper
1/2 tsp dried oregano

The pan we’d use for this → Best Nonstick Cookware for 2026: Top 5 Skillet Picks + Buying Guide

Affiliate disclosure: AislePrompt may earn a commission on qualifying purchases made through Amazon links, at no additional cost to you. See our policy →

Equipment for this recipe

Tools this recipe's steps call for, with a link to each on Amazon.

More Bakeware & baking tools → Shop all kitchen tools →

Instructions

Step 1: Preheat oven to 375°F. Arrange 4 large bell peppers halved and seeded cut side up in a baking dish.
Step 2: Heat 1 tbsp olive oil in a large skillet over medium heat. Add 1 small finely diced onion and 2 minced garlic cloves; sauté for 3-4 minutes until softened and fragrant.
Step 3: Add 1 lb ground beef to the skillet and cook, breaking up with a spoon, for 6-7 minutes until browned and cooked through.
Step 4: Stir in 3 cups chopped fresh spinach, 2 tbsp tomato paste, 1 tsp salt, 1/2 tsp black pepper, and 1/2 tsp dried oregano; cook for 2 more minutes until spinach wilts and mixture is well combined.
Step 5: Spoon the beef and spinach mixture evenly into the bell pepper halves. Top each filled pepper with 1 cup shredded mozzarella cheese divided evenly.
Step 6: Cover with foil and bake for 25 minutes. Remove foil and bake an additional 5-7 minutes until cheese is melted and bubbly.
Step 7: Let cool for 5 minutes before serving.