Grandma's Book - 3 Ingredient Key Lime Pie

This is fantastic. So easy and so good. This only uses 6 ounces of limeade, so mix the other 4 with a can of water for a refreshing drink. 

KEY LIME PIE

1 can sweetened condensed milk

1 tub cool whip, thawed

6oz frozen limeade concentrate, thawed

1 graham cracker crust

Combine milk, whip, and limeade concentrate in a bowl. Stir. I added about 5 drops of green food coloring, this is optional. Pour into pie crust. Garnish with lime and chill until firm, 4 hours or overnight.