3 blackberry turnover Recipes

blueberries, blackberry, market pantry raspberry jam, ready-to-unroll refrigerated pie crust, egg, beaten, sugar

dough, all-purpose flour (spooned and leveled) plus more for rolling, salt, sugar, cold unsalted butter , cut into pieces, mixed fresh berries , such as blueberries, raspberries, strawberries (quartered lengthwise), and blackberries (halved if large), granulated sugar, cornstarch, juice of 1/2 a lemon , about 4 tsp, eggwash : 1 egg beaten with 1 tsp water, sanding sugar or granulated sugar to garnish, optional