Cheese-Stuffed Chicken Breast with Spinach and Mushroom Sauté

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

Juicy chicken breasts stuffed with melted cheese, accompanied by a garlicky sauté of spinach and mushrooms that perfectly complements the rich protein. This italian-inspired chicken (keto, low carb) ready in about 40 minutes pairs shredded mozzarella cheese, packed fresh spinach, sliced mushrooms 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 weekly meal plan and pairs well with a quick salad or grain on the side. 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: 25 min Serves 4 Italian cuisine 420 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F. Using a sharp knife, cut a horizontal pocket into each of the 4 boneless skinless chicken breasts without cutting all the way through. Stuff each pocket with 1 oz shredded mozzarella cheese and press edges to seal.
  2. Step 2: Heat 2 tbsp olive oil in an oven-safe skillet over medium-high heat. Season chicken breasts with 1 tsp salt, 1/2 tsp black pepper, and 1/2 tsp dried oregano. Sear chicken for 3-4 minutes per side until golden brown.
  3. Step 3: Transfer skillet to preheated oven and bake chicken breasts for 15-18 minutes until internal temperature reaches 165°F and cheese is melted.
  4. Step 4: Meanwhile, in a separate large pan, melt 3 tbsp unsalted butter over medium heat. Add 3 minced garlic cloves and 8 oz sliced mushrooms, sautéing for 5-6 minutes until mushrooms are tender and fragrant.
  5. Step 5: Add 4 cups packed fresh spinach to the pan with mushrooms, cooking for 2-3 minutes until spinach wilts. Season with a pinch of salt and pepper.
  6. Step 6: Serve the cheese-stuffed chicken breasts alongside the garlicky spinach and mushroom sauté for a satisfying keto meal.

Equipment for this recipe

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Frequently asked questions

How long does Cheese-Stuffed Chicken Breast with Spinach and Mushroom Sauté take to make?

Total time is about 40 minutes (15 min prep + 25 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Cheese-Stuffed Chicken Breast with Spinach and Mushroom Sauté?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep shredded mozzarella cheese from drying out.

Can I substitute ingredients in Cheese-Stuffed Chicken Breast with Spinach and Mushroom Sauté?

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 Cheese-Stuffed Chicken Breast with Spinach and Mushroom Sauté 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 Cheese-Stuffed Chicken Breast with Spinach and Mushroom Sauté keto?

Yes — this recipe is tagged keto, low carb, 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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