Crust: Mix all ingredients in food processor then press into 9" pie plate, pushing up sides. Bake @ 375 for 7 minutes. Remove from oven & cool completely.
Filling: Blend all ingredients until smooth. Pour into cooled crust & bake @ 350 for 15 minutes. Remove from oven & cool for 10 minutes then place in fridge til chilled thru. Then slice & top with whipped topping & garnish with lime slice on top.
NOTE: Definetly use the Key Limes for this recipe. There is a big difference in a regular lime & a key lime & it comes through in this recipe! Also I used a pie ring after the filling was put into the crust to make sure the crust edges did not burn. Enjoy!