美国国旗元素Stars and Stripes Pie ~Ingredients: *1 box(es) (15 oz) refrigerated ready-to-use pie crusts *3 can(s) (21 oz each) cherry pie filling *1 can(s) (21 oz) blueberry pie filling *1 large egg, slightly beaten in a cup *3 tablespoon(s) sanding or coarse (