This is the easiest no bake key lime pie out there. It is creamy, citrusy, cold and oh so delicious. You can serve it chilled or even frozen for a perfect summer dessert.
In a large mixing bowl, stir together ⅓ cup key lime juice and 14 ounces sweetened condensed milk. It will be loose at first but should come back to condensed milk consistency as you stir.
Fold in 8 ounces Cool Whip until it is incorporated.
Spread key lime filling mixture in an 8 or 9 inch graham cracker crust.