Baked Mushroom Chicken Recipe

Flatten each chicken breast half to 1/4-in. thickness. Place flour in a resealable plastic bag; add chicken, a few pieces at a time. Seal and shake to coat. In a large skillet, brown chicken in 2 tablespoons butter on both sides. Transfer to a greased 11-in. x 7-in. baking dish. In the same skillet, saute mushrooms in the remaining butter until tender. Add the broth, salt and pepper. Bring to a boil; cook for 5 minutes or until liquid is reduced to 1/2 cup. Spoon over chicken. Bake, uncovered, at 375 ° for 15 minutes or until chicken is no longer pink. Sprinkle with cheeses and green onions. Bake 5 minutes longer or until cheese is melted.