French Onion Smothered Chicken with Mushrooms

Ingredients:

4 boneless, skinless chicken breasts

Salt and pepper to taste

2 tablespoons olive oil

2 large onions, thinly sliced

2 cloves garlic, minced

1 cup sliced mushrooms

1 tablespoon all-purpose flour

1 cup beef broth

1 tablespoon Worcestershire sauce

1 teaspoon dried thyme

1 cup shredded Gruyere cheese

Instructions: