HEAT oven to 400°F.
MIX graham crumbs and butter; press half onto bottom and up side of each of 2 (9-inch) pie plates. Brush lightly with some of the egg. Bake 4 min. Meanwhile, mix remaining eggs with all remaining ingredients except Cool Whip until well blended.
POUR pumpkin filling evenly into crusts. Bake 15 min. Reduce oven temperature to 350°F.
BAKE 40 to 45 min. or until toothpick inserted in centres comes out clean. Cool completely. Top each slice with 1 Tbsp. Cool Whip just before serving.