1. In a small skillet, cook sausage over medium heat until no longer pink; drain. Unroll dough and pat into a 14-in. x 12-in. rectangle. Sprinkle the sausage, cheddar cheese and spinach lengthwise down the center of the dough. Bring edges of dough to the center over filling; pinch seams to seal.
2. Place seam side down on a greased baking sheet. Brush top with butter; sprinkle with Parmesan cheese. Bake at 350° for 20-25 minutes or until golden brown. Serve warm with pizza sauce if desired. Yield: 6 servings.