INGREDIENTS
1 1/2 lb
Bonesless Skinless Chicken Breasts
1/2
of a Large Onion - Thinly sliced
1
Package of Whole Mushrooms - sliced
1/2 cup
Chicken Broth
1 cup
Heavy Cream
3 tbsp
Butter - Divided
1/2 cup
Parmesan Cheese
2 tbsp
Balsamic Vinegar
Salt and Pepper