Heat oven to 450°F. Remove pie crusts from pouches. On lightly floured surface, unroll and stack crusts one on top of the other. Roll to 17x12-inch rectangle. Fit crust into ungreased 15x10x1-inch pan, pressing onto corners. Fold extra crust even with edges of pan. Prick with fork. Crimp edges. Bake 10 to 12 minutes or until golden brown. Cool completely, about 30 minutes.