Start by preheating your oven to 375°F. Lightly grease an 8x8-inch baking dish with cooking spray to prevent sticking. Set the dish aside while you prepare the chicken and mushrooms.
This step ensures the chicken cooks evenly once everything is assembled. A properly greased dish also helps with easy cleanup later.
Whisk the eggs in one shallow bowl and place the Italian breadcrumbs in another bowl. Dip each chicken piece into the eggs first, then coat completely in breadcrumbs.
I like making sure every piece is fully coated because it creates a light crispy texture after baking. The breadcrumb coating also helps the sauce cling to the chicken.
Heat one tablespoon of olive oil and the butter in a large skillet over medium heat. Add the sliced mushrooms, season with salt and pepper, and cook for about 5 minutes until golden brown.
Fresh mushrooms release moisture while cooking, then develop a rich caramelized flavor. This step gives the entire dish a deep savory taste.
Spread half of the sautéed mushrooms across the bottom of the prepared baking dish. Reserve the remaining mushrooms for the top layer later.
This mushroom base adds moisture and flavor underneath the chicken. It also keeps the chicken tender while baking.
Add the remaining olive oil to the same skillet and place the breaded chicken pieces inside. Cook the chicken for 2–3 minutes on each side until lightly golden.
The chicken does not need to cook fully during this stage. Browning simply locks in flavor and creates a delicious crust.
Arrange the browned chicken pieces over the mushrooms in the baking dish. Top with the remaining mushrooms, then sprinkle the shredded cheese evenly across the top.
Freshly shredded cheese melts much better than pre-packaged cheese. It creates that gooey, cheesy finish everyone loves.
Using the same skillet, pour in the white wine and chicken stock. Scrape up the browned bits from the pan and simmer the liquid for about 3–5 minutes until slightly reduced.
Those browned bits at the bottom of the skillet contain incredible flavor. The sauce becomes rich, savory, and perfect for soaking into the chicken.
Pour the sauce evenly over the chicken and cheese. Bake uncovered for 10–12 minutes or until the chicken is fully cooked and the cheese is melted and bubbly.
The final bake combines all the flavors beautifully. The cheese turns golden while the sauce keeps everything moist and flavorful.
Remove the baking dish from the oven and let it rest for a few minutes. Sprinkle fresh parsley on top before serving for a bright and fresh finish.
I always serve this dish while the cheese is still hot and stretchy. It tastes incredibly comforting straight from the oven.