Step 1

Preheat the oven to 325F degrees. Line an 8x8 inch pan with aluminium foil and grease lightly.

Step 2

Mix together the graham crumbs, sugar and melted butter.

Step 3

Press into the bottom of the prepared pan and bake for 10 minutes.

Step 4

In a medium bowl beat the cream cheese until soft. Beat in the condensed milk until smooth.

Step 5

Mix in the egg yolks one at a time, then stir in the lime zest and lime juice.

Step 6

Pour on top of the crust and bake for about 30 minutes or until the top looks just set.

Step 7

Gently trace along the edges of the pan with a sharp knife, and allow to cool at room temperature. Chill in the fridge for at least 2 hours.

Step 8

To serve, whip the cream with the powdered sugar until peaks form. Top each bar with whipped cream and lime zest (optional)