Mushroom stuffed chicken breast is a juicy weeknight dinner with a garlicky mushroom and spinach filling tucked into a pocket and finished with melted mozzarella. It sears on the stovetop, finishes in the oven, and is ready in about 40 minutes.
Two chicken breasts make a dinner for two, and the filling cooks in the same skillet you use to sear the meat, so cleanup stays minimal. It looks impressive on the plate, yet the technique is simple enough for a regular Tuesday.
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Why This Mushroom Stuffed Chicken Breast Recipe Works
Cutting a deep pocket into each breast gives the filling a place to live, which keeps the cheese and vegetables inside the meat instead of sliding onto the pan. Seasoning both the inside and the outside builds flavor all the way through the chicken.
Golden mushrooms cooked with garlic and thyme add a savory, earthy depth, and baby spinach wilts in seconds to add color and freshness. Mozzarella melts into the mix and holds everything together when you slice the chicken.
Searing the chicken before it goes into the oven creates a browned crust, and the oven finishes the cooking gently so the meat stays juicy. A short rest after baking lets the juices settle.
Ingredients for Mushroom Stuffed Chicken Breast
- 2 boneless, skinless chicken breasts (about 7 oz each)
- 1/2 tsp kosher salt, divided
- 1/4 tsp black pepper, divided
- 2 tbsp unsalted butter
- 7 oz mushrooms, sliced about 1/8 inch thick (about 2 heaped cups)
- 2 cloves garlic, finely minced
- 1/2 tsp fresh thyme leaves
- 2 cups baby spinach
- 3 oz mozzarella cheese, sliced
- 1 tbsp olive oil
Chicken breasts. Choose breasts of about 7 ounces each so they cook in the same time the filling needs to melt. Pound very thick ends lightly if one side is much thicker than the other.
Mushrooms. Button or cremini both work. Slice them evenly, about 1/8 inch thick, so they brown quickly and release their moisture in the pan.
Garlic and thyme. Garlic and thyme season the mushrooms and give the filling a savory backbone. Add them after the mushrooms start to turn golden so they do not burn.
Baby spinach. Spinach cooks down to a small handful. It adds color and mild flavor without making the filling watery.
Mozzarella. Sliced mozzarella melts into the pocket and acts as the glue. Provolone or Swiss also work.
How to Make Mushroom Stuffed Chicken Breast
1. Heat the oven. Preheat the oven to 400 degrees F. Cut a deep pocket into the side of each chicken breast without slicing all the way through.
2. Season the chicken. Sprinkle half of the salt and pepper over the inside and outside of each breast.
3. Cook the mushrooms. Melt the butter in an ovenproof skillet over high heat. Add the mushrooms and cook about 3 minutes until they begin to turn golden.
4. Add the aromatics. Stir in the garlic, thyme, and remaining salt and pepper. Cook 2 more minutes until the mushrooms are nicely golden, then add the spinach and stir about 30 seconds until wilted.
5. Stuff the chicken. Spoon the mixture into the pockets, top with sliced mozzarella, and close each pocket with toothpicks.
6. Sear. Wipe out the skillet, heat the oil over medium high heat, and sear the chicken about 1 1/2 minutes per side until golden.
7. Bake and rest. Move the skillet to the oven and bake for 15 minutes, until a thermometer in the thickest part reads 165 degrees F. Rest for 5 minutes, remove the toothpicks, and serve.
How to Serve Mushroom Stuffed Chicken Breast
Slice the chicken on an angle to show the filling and spoon any pan juices over the top. Creamy sides pair well here, such as creamy garlic Parmesan orzo, and a green vegetable like air fryer broccoli with Parmesan keeps the plate balanced. A simple Italian house salad adds a fresh crunch, and fluffy homemade dinner rolls help mop up the juices.
How to Store and Reheat Mushroom Stuffed Chicken Breast
Cool leftovers within 2 hours and refrigerate them in an airtight container for up to 3 days. Reheat in a hot oven at 350 degrees F, covered with foil, until the center reaches 165 degrees F, about 15 minutes. Freezing is possible for up to 2 months, but the filling can turn a little watery after thawing.
Tips and Variations for Mushroom Stuffed Chicken Breast
Do not cut through. Slice the pocket only about three quarters of the way across the breast so the filling stays sealed in.
Dry the mushrooms. Wipe mushrooms with a paper towel rather than rinsing them so they brown instead of steaming.
Use high heat. A hot pan gives mushrooms color fast, which concentrates their flavor.
Seal with toothpicks. Use wooden toothpicks or kitchen twine to hold the pockets closed while the chicken sears.
Check the temperature. Use a thermometer and pull the chicken at 165 degrees F for safe and juicy results.
Rest before slicing. Five minutes of rest keeps the cheese inside the pocket and the juices in the meat.
Swap the cheese. Provolone, Swiss, or Gruyere melt nicely in place of mozzarella.
Handle raw chicken carefully. Do not rinse raw chicken, and wash hands and surfaces after handling it. This FDA food safety guide has more general safe handling and cooking tips.
Frequently Asked Questions About Mushroom Stuffed Chicken Breast
How do you cook mushroom stuffed chicken breast in the oven?
Sear the stuffed chicken in an ovenproof skillet for about 1 1/2 minutes per side, then bake at 400 degrees F for 15 minutes until the center reaches 165 degrees F.
Can you make mushroom stuffed chicken breast ahead of time?
You can cook the filling and cut the pockets earlier in the day, keep everything refrigerated, and stuff and cook the chicken just before dinner for the ideal texture.
What cheese goes ideal in mushroom stuffed chicken breast?
Sliced mozzarella melts smoothly and keeps the filling together. Provolone and Swiss are good swaps if you want a stronger flavor.
Why is my chicken dry?
Overcooking is the usual cause. Pull the chicken as soon as it reaches 165 degrees F and let it rest for 5 minutes.
What can I use instead of baby spinach?
Chopped kale or arugula can replace spinach, though kale needs a little longer in the skillet.
Mushroom Stuffed Chicken Breast
Equipment
- Oven safe skillet
- Toothpicks
- Meat thermometer
- Sharp knife
Ingredients
Main Ingredients
- 2 chicken breasts boneless, skinless, about 7 oz each
- ½ tsp kosher salt divided
- ¼ tsp black pepper divided
- 2 tbsp unsalted butter
- 7 oz mushrooms sliced about 1/8 inch thick
- 2 cloves garlic finely minced
- ½ tsp fresh thyme leaves
- 2 cup baby spinach
- 3 oz mozzarella cheese sliced
- 1 tbsp olive oil
Instructions
Cooking
- Preheat. Heat the oven to 400 degrees F. Cut pockets. Use a sharp knife to slice a deep pocket into the thick side of each chicken breast, stopping before you cut through.
- Season. Rub half of the salt and pepper over the inside and outside of the chicken. Brown the mushrooms. Melt the butter in an ovenproof skillet over high heat and cook the mushrooms for 3 minutes, until they start to turn golden.
- Add flavor. Stir in the garlic, thyme, and the rest of the salt and pepper and cook 2 minutes more. Wilt the spinach. Add the spinach and stir about 30 seconds until wilted, then remove the pan from the heat.
- Fill and close. Pack the filling into the pockets, lay mozzarella slices on top, and secure the openings with toothpicks.
- Sear the chicken. Wipe the skillet, heat the olive oil over medium high heat, and sear each side for about 1 1/2 minutes until golden.
- Bake. Bake 15 minutes, until the chicken reaches 165 degrees F. Rest 5 minutes and remove the toothpicks before serving.
