Preheat the oven to 375 degrees and prepare a large baking pan by lining with a sheet of parchment paper. Set aside.
Using a rolling pin, lightly roll out both sheets of dough to approximately 9x9 inches, trimming the edges to make them a perfect square.
Using a sharp knife or a pizza cutter, cut the dough into 3 strips, each 3 inches wide. Cut each of those strips into three 3 inch pieces, leaving you with nine 3 inch squares. Do this with the other sheet of dough so that you have eighteen 3x3 inch squares.
Place 9 of the squares of dough on the prepared baking pan. Set aside.
Using a small, star-shaped cookie cutter, punch out a star shape in the center of other 9 squares of dough. These will be the top half of each hand pie.
In the center of the squares you've placed on the baking pan, spread about a tablespoon of strawberry or blueberry jam, leaving a border around the edge of the square. Top the jam with a few berries {or slices of strawberry}.
Meanwhile, in a small bowl, beat an egg and 1 tablespoon of water together until smooth to form an egg wash. This will be the "glue" for the pies and will also help them brown.
Dip your finger or a small pastry brush into the egg wash and wet the border of each of the jam squares with a bit of it. Carefully top each of the squares with one of the star-punched squares of dough and gently push down around the edges. {You'll have 9 completed pies.}
Using the tines of a fork, crimp the edges of each pie to seal. Brush the top of each pie with the remaining egg wash.
Bake for about 18-20 minutes or until the pies are golden and the crust is set. Remove from oven and allow to cool completely.