Position rack in lower third of the oven and preheat to 425°F. Whisk 1 cup sugar, cornstarch, and salt in large bowl. Toss cherries, orange zest, orange juice, and vanilla with sugar mixture and set aside.

Roll out 1 pie crust disk on a floured surface to a 12-inch round. Transfer to a 9-inch pie plate. Trim overhang to 1/2 inch. Roll out second dough disk on floured surface to 12-inch round. Using a small star cookie cutter, cut out the dough leaving a 1-inch edge all the way around. Pour the cherry mixture into the dough-lined dish. Dot with butter. Place the star cut-out dough round on top. Fold bottom crust up over ends of strips and crimp edges with your fingertips to seal.

Place pie on a rimmed baking sheet or over aluminum foil and bake 15 minutes. Reduce oven to 375°F. Bake about 1 hour more, or until cherry filling is bubbling and crust is golden brown, cover edges with foil if they are browning too quickly. Transfer pie to rack and cool completely before serving.