Easy Gluten Free Cherry Turnovers

recipe gluten free biscuit dough (I used the Extra Flaky Buttermilk Biscuits from page 227 of GFOAS Bakes Bread, but the Gluten Free Biscuits from the blog would work just fine, too—try using buttermilk in place of milk or cream), chilled

cherry preserves

Egg wash (1 egg + 1 tablespoon lukewarm water, beaten)

confectioners’ sugar

milk (any kind), plus more by the 1/4 teaspoonful if necessary