Key Lime Pie

1-1/4 cups crushed pretzels

1/4 cup Splenda

6 Tbsp. I Can't Believe It's Not Butter Light, melted

1 can (14 oz.) sweetened fat free condensed milk

1/2 cup lime juice

1 env. KOOL-AID Lemon Lime Unsweetened Soft Drink Mix

1 tub (8 oz.) whipped topping sugar free, fat free, thawed, divided

Make It

MIX pretzel crumbs, sugar and butter; press onto bottom and up side of 9-inch pie plate. Refrigerate until ready to fill.
MIX next 3 ingredients in large bowl. Whisk in 2-1/2 cups whip topping; pour into crust.
FREEZE 6 hours. Remove from freezer 15 min. before serving; let stand at room temperature until slightly softened. Top with remaining whip topping.