Chicken Lombardy

Name: Chicken Lombardy
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: Italian
Ingredients: 4 boneless skinless chicken breasts (pounded to even thickness); 2 tablespoons butter; 2 teaspoons minced garlic; 8 ounces fresh mushrooms (diced); ⅓ cup flour; ¾ cup marsala cooking wine; ½ cup chicken broth; salt and pepper to taste ((I used about ½ teaspoon each)); ⅓ cup shredded mozzarella cheese; ⅓ cup shredded parmesan cheese; 1 green onion (chopped)