Sauteed Chicken with Brie & Vegetable Sauce

WHAT YOU'LL NEED

• 1 Tbsp. olive oil
• 4 boneless, skinless chicken breast halves, pounded lightly (about 1-1/4 lbs.)
• 1 1/2 cups water
• 1/2 cup milk
• 2 Tbsp. dry white wine or water
• 1 package Knorr® Vegetable recipe mix
• 1/8 tsp. ground black pepper
• 4 ounces Brie cheese or Gruyere or fontina cheese, cut into 1/2-inch pieces