Easy Key Lime Pie

This is one of the best..and definitely the easiest to make..Key lime pies ever.

Easy Key Lime Pie
From Real Simple magazine.

1 14-ounce can sweetened condensed milk

1 6-ounce can frozen limeade concentrate (not thawed)
1 cup heavy cream
1 6-ounce graham cracker pie crust
zest of 1 lime
Place the condensed milk, limeade concentrate, and cream in the bowl of an electric mixer fitted with the whisk attachment. Beat until fluffy and soft peaks form.

Pour the filling into the pie crust and smooth the top. Refrigerate until chilled and loosely set, at least 4 hours (and up to overnight).

Sprinkle the pie with the zest before serving.