LINE 9x5-inch loaf pan with foil, with ends of foil extending over long sides of pan. Mix Crust Mix, butter, 2 Tbsp. of the flavored instant coffee and sugar with fork in medium bowl until crumbs are evenly moistened. Press 1/2 cup crumb mixture onto bottom of prepared pan; reserve remaining crumb mixture for later use.
BEAT milk, Filling Mix and remaining flavored instant coffee in medium bowl with mixer on low speed until blended. Beat on medium speed 3 min. (Filling will be thick.) Gently stir in COOL WHIP. Spoon 1/3 of the COOL WHIP mixture over crust in pan; sprinkle with 1/3 of the reserved crumb mixture. Repeat layers twice; cover.
FREEZE 4 hours or until firm. Use foil handles to lift dessert from pan. Let stand at room temperature 10 min. to soften slightly before slicing to serve.