fix dough as directed on package let rise for 45min.
cook sausage & onion together, drain well combine rest of ingredients in bowl except swiss cheese,let cool
roll dough to 1/4 inch thickness,on greased cookie sheet, spread mixture on half of the dough, top with swiss cheese pull the other half over the top of the mixture and pinch all the sides together. Bake for 20 min. at 350 on greased cookie sheet or until golden brown, brush with butter when done.