Another way to make a tartlet: Roll out and cut the dough into 4-inch squares as described in the recipe. Brush lightly with the egg wash. With the tip of a paring knife, cut ½ inch in from the edge along all 4 sides, but stopping ¼ inch from two opposing corners (top, right). Pick up the corners that have been cut all the way through and cross them over one another (left). Press the edges down at each of the four corners to seal (bottom, right).