1 (6 oz.) can lemonade frozen concentrate
1 pt. vanilla ice cream, softened
Yellow food coloring, if desired
3 1/2 c. (8 oz.) thawed Cool Whip topping
1 graham cracker pie crust

Place concentrate in large mixing bowl and beat about 30 seconds. Gradually spoon in ice cream and blend. Fold in whipped topping and add food coloring, whipping until smooth. Freeze until mixture will mound. Spoon into pie crust. Freeze until firm at least 4 hours. Store any left-over pie in freezer.