To make this easy key lime pie:

5 egg yokes
2 cans sweetened condensed milk
1 small bottle of lime juice
5 key limes minced into small pieces
2 – 3 key limes sliced thinly
1 key lime for zest
1 pre-made shortbread crumb crush (gram cracker works well too)
Whipped topping

Pre heat your oven to 350°f. While oven is heating mix the 5 egg yokes and 2 cans of condensed milk in a medium mixing bowl with a whisk until well blended. Then mix in lime juice until well blended again then stir in pieces of key lime. Pour the mixture into the shortbread crumb crust. Bake at 350°f for about 30 minutes, until right before it beings to brown. After the pie is done baking place the slices of key lime around the edge of the crush and one slice in the middle. Then cover the cake in key lime zest. Refrigerate until cool. Slice and serve with whipped topping.