For the Key Lime Pie, first prepare the crispy base. To do this, melt the butter in a small saucepan. Meanwhile, place the cookies in a freezer bag or dish towel and roll over them vigorously with a rolling pin to break the cookies into small pieces. Now mix the melted butter with the cookie crumbs and press the cookie mixture into a greased pan.
For the lime filling, put the eggs in a saucepan, whisk lightly and beat with the condensed milk until frothy. Add the lime juice and zest and continue beating until you have a creamy mixture.Pour the mixture into the prepared cookie base and bake in the oven at 170 °C for about 10-15 minutes.
Serve the Key Lime Pie with freshly whipped cream.