Mushroom and Spinach Stuffed Chicken Breast

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

Tender chicken breasts filled with a savory blend of mushrooms, spinach, and cheese, baked to juicy perfection. This american-inspired chicken ready in about 45 minutes pairs chopped fresh spinach, finely diced cremini mushrooms, shredded mozzarella cheese for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 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: 30 min Serves 4 American cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 375°F. Using a sharp knife, carefully cut a pocket into each of the 4 boneless skinless chicken breasts, being careful not to slice through.
  2. Step 2: Heat 2 tbsp olive oil in a skillet over medium heat. Add 3 minced garlic cloves and sauté for 30 seconds until fragrant. Add 1 cup finely diced cremini mushrooms and cook for 5 minutes until softened and browned.
  3. Step 3: Stir in 2 cups chopped fresh spinach and cook for 2 minutes until wilted. Remove from heat and mix in 1/2 cup shredded mozzarella cheese, 1/4 cup grated Parmesan, 1 tsp salt, 1/2 tsp black pepper, and 1/2 tsp dried thyme.
  4. Step 4: Stuff each chicken breast pocket evenly with the mushroom-spinach mixture. Secure with toothpicks if needed. Place breasts in a baking dish.
  5. Step 5: Bake for 25-30 minutes, or until the chicken reaches an internal temperature of 165°F and juices run clear. Let rest for 5 minutes before serving.

Frequently asked questions

How long does Mushroom and Spinach Stuffed Chicken Breast take to make?

Total time is about 45 minutes (15 min prep + 30 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 Mushroom and Spinach Stuffed Chicken Breast?

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 chopped fresh spinach from drying out.

Can I substitute ingredients in Mushroom and Spinach Stuffed Chicken Breast?

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 Mushroom and Spinach Stuffed Chicken Breast 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.

What goes well with Mushroom and Spinach Stuffed Chicken Breast?

American chicken like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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