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Cheesy Garlic Butter Mushroom Stuffed Chicken

Cheesy garlic butter mushroom stuffed chicken with a deeply caramelized exterior and a molten mushroom-garlic-butter cheese filling. Each chicken breast is seared until golden, baked until juicy, then sliced to reveal steaming mushroom and cheese oozing outward.
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Prep Time 20 minutes
Cook Time 30 minutes
resting 5 minutes
Total Time 55 minutes
Servings: 4 servings
Course: Main Dish
Cuisine: American
Calories: 620
Ingredients Equipment Method Notes

Ingredients
  

Chicken and seasoning
  • 4 boneless skinless chicken breasts
  • 0.25 tsp salt to taste
  • 0.25 tsp pepper to taste
  • 0.5 tsp garlic powder to taste
  • 0.5 tsp smoked paprika to taste
  • 2 tbsp olive oil
Mushroom filling
  • 3 tbsp butter
  • 8 oz cremini mushrooms, finely diced
  • 4 cloves garlic, minced
  • 1 tsp fresh thyme leaves
  • 0.25 tsp salt to taste
  • 0.25 tsp pepper to taste
  • 1 cup shredded mozzarella cheese
  • 0.5 cup Parmesan cheese, grated
Finishing
  • 1 toothpicks for securing
  • 1 tbsp extra garlic butter for drizzling

Equipment

  • 1 oven-safe skillet

Method
 

Make the mushroom cheese filling
  1. Cook the mushrooms in butter over medium-high heat for 5-6 minutes, stirring, until all moisture has evaporated and the pan looks drier.
  2. Add the minced garlic and fresh thyme leaves, then cook for 1 minute until fragrant and glossy.
  3. Cool the mushroom mixture slightly so it won’t melt the cheese too fast, then stir in the shredded mozzarella and grated Parmesan until evenly combined and melty.
Stuff and secure the chicken
  1. Cut a deep pocket in each chicken breast, then season inside and out with salt, pepper, garlic powder, and smoked paprika.
  2. Fill each pocket with the mushroom-cheese mixture and secure the opening with toothpicks so the filling stays inside.
Sear and bake
  1. Heat olive oil in an oven-safe skillet over medium-high heat, then sear the chicken for 3-4 minutes per side until deeply golden.
  2. Bake at 400°F for 18-22 minutes until the internal temperature reaches 165°F and the juices run clear when pierced.
Finish and serve
  1. Remove the toothpicks, drizzle with extra garlic butter, and rest the chicken for 5 minutes so the molten filling settles slightly before slicing.
  2. Slice and serve, showing the golden seared exterior and the mushroom-garlic butter-cheese filling steaming and oozing outward.

Notes

Pro tip: Cook the mushrooms until the pan is dry before adding garlic and thyme—this prevents watery filling from leaking out during baking. Store leftovers in an airtight container in the refrigerator for up to 3 days; reheat gently in a 350°F oven until warmed through. Freezing is not recommended because the cheese filling can change texture when thawed. For a lower-fat swap, use part-skim mozzarella and reduced-fat Parmesan in the filling.