Valerie produces a luscious, creamy potato soup in simply thirty minutes using leftover mashed potatoes! Sign up for #discoveryplus to see more dishes from Valerie on Valerie's #HomeCooking:. Get the recipe ▶ Sign Up For Food Network ▶ Welcome to Food Network, where finding out to cook is as basic as clicking play! Grab your apron and get ready to get cookin' with some of the very best chefs around the world. We'll offer you a behind-the-scenes…