01 -
Adjust oven rack to middle position and preheat oven to 350˚F. Line an 8×8 inch pan with parchment paper, leaving a 2-inch overhang on each side. Set aside.
02 -
Grind vanilla wafer cookies in a food processor until finely ground.
03 -
Mix cookie crumbs, melted butter, and brown sugar in a bowl until it resembles wet sand.
04 -
Press the mixture evenly into the prepared pan and bake for 13-15 minutes. Cool for 30 minutes.
05 -
Beat egg yolks and lime zest in a bowl with a hand mixer on medium speed for 4-5 minutes until thickened. Add sweetened condensed milk and continue beating for 3 minutes. Whisk in lime juice.
06 -
Pour filling over cooled crust. Bake for 15-17 minutes, until filling is set but slightly wobbly when the pan is gently shaken. Cool at room temperature for 30 minutes, then chill in the refrigerator for 3 hours or overnight.
07 -
Beat heavy cream and powdered sugar in a bowl using a hand mixer until firm peaks form. Finish mixing by hand with a whisk.
08 -
Spread whipped cream evenly over the custard layer using an offset spatula. Chill for at least 30 minutes.
09 -
Use parchment overhang to lift bars out of the pan. Slice into squares with a sharp knife, cleaning the blade between cuts. Serve cold.