Press onto bottom and sides of 9-inch pie plate. Place in freezer 15 to 30 minutes or until frozen. Spread vanilla frozen yogurt evenly over crust. Return to freezer for about 2 hours or until firm. Microwave fudge topping according to package directions.
Spoon raspberry frozen yogurt over vanilla yogurt using a broad flat ice cream spade.
Drizzle with topping. Return to freezer for several hours or overnight. Remove from freezer and let stand at room temperature 10 to 15 minutes before slicing. Top with whipped topping, fresh raspberries and mint. Makes 8 servings.