Unroll Pizza Dough Onto An Ungreased Baking Sheet; Pat Into A 14-In. X 11-In. Rectangle. Spread Pizza Sauce Over One Long Side Of Dough To Within 1/2 In. Of Edges. Layer The Spinach, Sausage, Mushrooms And Cheese Over Sauce. Fold Dough Over Filling; Pinch Seams To Seal. Bake At 400