1 2 Large Sheet Pans2 Warm potatoes and milk together. Place in a large mixer with a dough hook. Add remaining ingredients and mix on low speed for 6 minutes3 Cut dough into two pieces and oil top of dough. Let rise till dough is double in bulk. Roll out dough on a floured surface and place on greased sheet pans.4 Continue rolling to make dough fit the pan. Pierce dough over entire surface then coat with rosemary olive oil and let rise till doubled in height.