Press crust onto the bottom and up the sides of an ungreased 9-in. tart pan with removable bottom; trim edges. Generously prick the bottom with a fork; set aside.
In a large skillet, cook the pears, cranberries, apple juice concentrate and apple pie spice over medium heat until pears are tender. Pour into crust. Bake at 375° until crust is golden brown, 30-35 minutes. Cool on a wire rack.