Chicken Breasts with Shiitake Mushrooms

Ingredients

• 4 boneless, skinless chicken breasts
• Salt
• Pepper
• 2 tbsp olive oil
• 1 tbsp unsalted butter
• 12-15 Large shiitake mushrooms, wiped clean, stems removed and minced, caps thickly sliced
• 3 shallots, thinly sliced
• 1/2 cup dry white vermouth
• 1/2 cup homemade chicken stock or low salt, packaged
• 1 Large sprig of fresh rosemary, leaves removed and chopped
• Parsley for garnish