Place stick of butter into a 1 1/2 quart baking dish and place in oven to melt butter. In a mixing bowl, combine sugar, flour, baking powder, milk and salt. Stir to mix well. Remove baking dish from oven and pour mixture over melted butter- do not stir. Pour can of fruit (juice and all) on top- once again, do not stir. Bake 45-60 minutes. Dough will be done when it is golden brown on top. Spoon hot into dessert bowls and top with ice cream or whipped cream, if desired.