Great topping for bread, potatoes, or other carbohydrates.
Cut the mushrooms, chicken breast, and onion into bite-sized pieces.
Add olive oil to a pan and sauté the onion and mushrooms.
Add the chicken breast and cook until done.
Season with salt and pepper.
Place cheese on top of the chicken breast, cover with a lid, and let the cheese melt.
Transfer the finished dish to a plate.