Did you ever try those Biscoff cookies?  I always thought they would make a good pie crust and then Nina brought some some key limes.

INGREDIENTS

Crust:
1 1/2 cups of crushed biscoff cookies
5 tablespoons melted butter

Filling:
14 oz (1 can) of sweetened condensed milk
4 egg yolks
1/2 cup key lime juice
1 teaspoon lime zest

Whipped cream for serving

DIRECTIONS

Preheat oven to 350 degrees. Crush biscoff cookies in a plastic bag with a roller until finely ground.  Put in bowl.  Stir in butter.  Push into a pie plate and bake for 10-15 minutes.

While cooking, make filling by mixing condensed milk and egg yolks until well combined.  Add lime juice and zest.  The mixture will thicken a bit.  Once pie crust is done, pour filling into hot pie crust and bake for about 15 minutes.  Let cool completely on wire rack and the refrigerate overnight.

Serve with fresh whipped cream.