22ozsweetened condensed milk1 14 oz can plus 3/4 cup from a second can
1cupfreshly squeezed lime juiceor replace 1/4 cup with clementine juice to mimic key limes
For the topping:
1cupheavy cream
2tbsppowdered sugar
1tspvanilla
Instructions
For the crust:
Adjust oven rack to the middle and heat to 350. Line an 8x8 pan with parchment paper so it hangs over the sides to remove the bars when done.
Grind the Nilla wafers until crumbs and mix with the butter. Transfer to the pan, and press the crumbs into the bottom/sides of the pan.
Bake for 10-15 minutes until golden brown and fragrant. Cool completely.
For the filling:
Whisk the egg yolks and zest by hand or in a mixer until fluffy and light in color.
Add the sweetened condensed milk and beat for another 2-3 minutes.
Whisk in the lime juice. Pour into the crust and place into the oven for 15-20 minutes until the filling is set but still has a little jiggle (145-150 degrees on instant read thermometer).
Remove from the oven and cool for 30 minutes then put into the fridge to cool completely before adding the whipped cream topping.
For the topping:
Combine the sugar and cream and vanilla and whip to stiff peaks. Spread on top of the key lime custard and chill for 30 minutes. Remove from the pan by pulling the parchment paper out on both sides, and cut into squares. Store in the fridge.