On a sheet of parchment paper, pat out 1/2 of the dough into an 8-inch circle. Carefully spread jam over dough, leaving a 1/2-inch border. Since the dough is quite soft, using a spoon, drop remaining dough in dollops over jam. With a fork, carefully spread the dollops out as evenly as you can to cover the whole scone. Sprinkle whole or ground flax seeds over scone.