Cream butter and cream cheese, beating at medium speed of an electric mixer until light and fluffy. Add flour to creamed mixture, mixing well. Roll dough to 1/8-inch thickness on a lightly floured surface; cut into rounds with a 2-1/2-inch cookie cutter. Place on lightly greased cookie sheets. Spoon 1/4 teaspoon jam on each cookie; fold opposite sides to center, slightly overlapping edges. Bake at 375 degrees for 15 minutes. Cool on wire racks, and ----