Punch dough down; cover and let rest 10 minutes; divide dough in half. Shape each half to form a 20-inch rope. Place 1 rope of dough around the inside edge of a greased 9 inch round cake pan. Coil the second rope of dough in the center of the pan. Pinch ends together. Brush lightly with melted shortening. Cover and let rise in a warm place until nearly double in size. Bake at 350 for 20 minutes. Remove from pan and place on wire rack. Drizzle with confectioners sugar frosting. Serve warm.