In a bowl combine sauce, beef, pepperoni, mozzarella, onions and peppers if desired and mix well.
Separate dough into rectangles and spread out with fingers to make the dough thin.
Spoon a spoonful of meat mixture along the long side of dough and roll up starting with the long side. Turn up sides of the long side and roll. Place seam side down on cookie sheet and bake 15 minutes or until golden brown.