On lightly floured surface, unroll dough. Spread mustard over dough, leaving 1/4-inch border around edges. Sprinkle corned beef, sauerkraut, cheese and caraway seed over mustard. Gently roll up dough, starting with long side. Cut into 12 (1 1/4-inch) slices. On cookie sheet, place slices, cut sides down, 2 inches apart.