Chocolate Meringue Cookies
["2 large egg whites", "1/2 c. sugar", "1 tsp. vanilla", "3 Tbsp. cocoa (unsweetened)", "1/2 c. semi-sweet chocolate chips"]
["Preheat oven to 250\u00b0.", "Line 2 baking sheets with aluminum foil and set aside."]
["egg whites", "sugar", "vanilla", "cocoa", "semi-sweet chocolate chips"]