It is super easy, and probably not the best dessert for you, (because of the cool whip) but it is creamy and tart and delish.
Frozen Key Lime Pie
One 8-ounce container nondairy whipped topping, thawed slightly
One 14-ounce can sweetened condensed milk
1/2 cup fresh lime juice
One 9-inch prepared graham cracker pie crust (I made my own)
Finely grated lime zest for sprinkling (I put 1 TB in the pie)
1. In a medium bowl, whisk together the whipped topping, condensed milk, and lime juice until smooth. Spoon the mixture into the graham cracker crust and smooth the surface with a rubber spatula.
2. Set in the freezer until firm, about 30 minutes. Sprinkle the lime zest over the top before serving.