1-First, preheat your oven to 400°F (200°C) and lightly grease a baking dish to get everything ready for that perfect bake.

2-Next, melt 4 tablespoons of butter in a large ovenproof pan over medium heat, then add 4 cloves of minced garlic and sauté until fragrant, about 1 minute oh, the scent is heavenly! Add 8 ounces of sliced brown mushrooms, salt, pepper, and 2 tablespoons of chopped fresh parsley, and cook until the mushrooms are soft; set this aside to cool for the stuffing.

3-Now, for the chicken prep: pat 4 skinless, boneless chicken breasts dry and season them with salt, pepper, 1 teaspoon of onion powder, and 1 teaspoon of dried parsley. Slice a horizontal pocket in each breast and insert 2 slices of mozzarella cheese into each one. Stuff the cooled mushroom mixture evenly into the pockets, top each with 1 tablespoon of grated Parmesan cheese, and secure with toothpicks to keep everything in place.

4-Heat the same pan with those flavorful mushroom juices over medium-high, sear the stuffed chicken breasts until golden on both sides, then cover the pan and transfer it to the oven. Bake for 20 minutes or until the chicken is cooked through trust me, your family will cheer when they see this! For the optional Garlic Parmesan Cream Sauce, after removing the chicken, fry 2 large cloves of minced garlic in the leftover pan juices, add 1 tablespoon of Dijon mustard and 1 1/2 cups of half and half, then simmer gently. Stir in the remaining mushrooms, 1/2 cup of finely grated Parmesan cheese, and season with salt, pepper, and 2 tablespoons of chopped fresh parsley; thicken with the cornstarch mixture if needed, and coat the chicken before serving.