HEAT oven to 375ºF.
MIX crumbs, 1 Tbsp. granulated sweetener and margarine. Press onto bottom and up side of 9-inch pie plate. Bake 8 to 10 min. or until lightly browned; cool.
MEANWHILE, mix remaining granulated sweetener, cornstarch and water in medium saucepan. Bring to boil on medium heat, stirring constantly; cook and stir 5 min. or until thickened Add dry gelatin mix; stir 2 min. until completely dissolved.
POUR about 1/3 cup of the gelatin mixture into crust. Mix remaining gelatin mxture with strawberries; pour into crust. Refrigerate 2 hours or until firm. Serve topped with COOL WHIP.