The secret ingredient in this easy-to-work dough is potato-it provides just the right texture and flavor as well as potassium. You'll need a ricer to ensure smooth potatoes for your dough, but we love this gluten-free recipe so much that we think you'll agree it's worth the small investment. Keep parbaked pizza shells on hand for quick weeknight meals. Roll the dough balls into rounds and bake on a preheated pizza stone or baking sheet at 500 degrees F for about 10 minutes for a softer crust, about 15 minutes for a crisper crust. Remove and let cool. Wrap the pizza shells well and freeze for up to 1 month. When ready to serve, add your favorite toppings to the frozen pizza shell and bake on a preheated pizza stone or baking sheet at 500 degrees F until hot.