Once doubled, dump dough onto a work surface.
Using fingers, press the dough into a 12" x 9" (30 cm x 22 cm) rectangle.
Loosely roll dough away from you so you have a 12" (30 cm) log.
Cut the log into 12 pieces.
Form each piece into a small loose dough ball. Cover them with a piece of plastic wrap or cotton kitchen towel.
Allow balls to relax on counter for 10-15 minutes.
Flatten each ball into a 5" / 12 cm circle.
Place one tablespoon of jam filling in the center of the circle.
Pull the sides of the circle to the center, pinch very well together so filling does not come out, flip over, and tighten the dough into a round shape.
Place the twelve filled rounds on a well floured sheet pan.
Cover with plastic wrap and allow to rise in a warm place until nearly doubled in size, about 30-40 minutes.