Mix wafer crumbs, butter and sugar until blended; press onto bottom and up side of 9-inch pie plate.
Beat cream cheese in large bowl with mixer until creamy. Gradually add milk, beating after each addition until blended. And dry pudding mix, pumpkin and spice; beat on low speed 1 min. or until blended. Stir in 1/2 cup COOL WHIP.
Pour into crust.
Refrigerate 2 hours or until firm. Top with remaining COOL WHIP.