Lime Chiffon Pie

We were invited to a BBQ so I made this pie to bring. It's very light and refreshing. I've included the recipe, it's very easy to make.

Lime Chiffon Pie

2/3 cup boiling water
1 pkg. lime jello
Ice cubes
1/2 cup cold water
2 cups thawed Cool Whip
Zest and juice from 1 lime
1-1/4 cups graham crumbs
2 Tbsp. margarine, melted

Stir boiling water into dry jelly powder in large bowl at least 2 min. until dissolved. Add ice to cold water to measure 1 cup. Add to jelly; stir until melted. Stir in whipped topping, zest and juice with whisk. Refrigerate 15 min. or until thick enough to mound.
Meanwhile, combine graham crumbs and margarine in 9-inch pie plate. Press onto bottom and up side of plate; fill with jelly mixture.
Refrigerate at least 4 hours.