Cheddar-Stuffed Keto Meatballs in Tomato Sauce

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Juicy ground beef meatballs filled with melted cheddar cheese, simmered in a rich, low-carb tomato sauce perfect for a comforting keto dinner. This italian-inspired keto (low carb, high protein) ready in about 45 minutes blends (85% lean) ground beef, large egg, almond flour into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 400 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. 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: 20 min Cook: 25 min Serves 4 Italian cuisine 400 cal/serving
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Ingredients

Instructions

  1. Step 1: In a large bowl, combine 1 lb ground beef, 1 large egg, 1/4 cup almond flour, 2 tbsp grated Parmesan cheese, 1 tsp garlic powder, 1 tsp onion powder, 1/2 tsp salt, and 1/4 tsp black pepper. Mix gently until just combined.
  2. Step 2: Divide meat mixture into 12 equal portions. Flatten each portion in your palm, place a 1/3-inch cube of sharp cheddar cheese (about 4 oz total) in the center, and carefully shape the meat around the cheese to seal completely.
  3. Step 3: Heat 2 tbsp olive oil in a large skillet over medium heat. Add meatballs and cook for 3-4 minutes per side until browned on all sides.
  4. Step 4: Pour 1 1/2 cups low-carb tomato sauce, 1 tsp dried oregano, 1/2 tsp salt, and 1/4 tsp black pepper into the skillet with meatballs. Reduce heat to low and simmer uncovered for 15 minutes until meatballs are cooked through and sauce thickens slightly.
  5. Step 5: Stir in 2 tbsp chopped fresh basil before serving. Serve meatballs hot with extra sauce.

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Frequently asked questions

How long does Cheddar-Stuffed Keto Meatballs in Tomato Sauce take to make?

Total time is about 45 minutes (20 min prep + 25 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Cheddar-Stuffed Keto Meatballs in Tomato Sauce?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Cheddar-Stuffed Keto Meatballs in Tomato Sauce?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Cheddar-Stuffed Keto Meatballs in Tomato Sauce for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Cheddar-Stuffed Keto Meatballs in Tomato Sauce low carb?

Yes — this recipe is tagged low carb, high protein, gluten free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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