Frozen Lemonade Pie
Beat heavy cream until stiff peaks. In a separate bowl, mix sweetened condensed milk and lemonade concentrate. Gently fold lemonade mixture into whipped cream. Spoon into crusts. Freeze pies until firm. Remove from freezer, and let stand 10 minutes before serving. Garnish, if desired.
To lighten this up considerably, use Cool Whip in place of the whipped cream.