1. Preheat the oven to 190°C/375F and line a square tin with greaseproof paper.

Base

1. Place the crushed biscuits and melted butter and stir until no dry portions remain in the bowl and the mixture resembles a rough breadcrumb.
2. Spoon into your tin and press down firmly.
3. Place in the oven and bake for 10 minutes until lightly golden.

Filling

1. For the filling, place the egg yolks, sweetened condensed milk and heavy cream in a bowl and beat on low to break the egg yolks and get the mixture smooth, approximately 2 minutes.
2. Add in the lime juice and beat on medium until thick and pale, approximately 2 minutes.
3. Pour the into the cooled crust, cover and place in the oven until only jiggly in the center, approximately for 20 minutes.
4. Remove and allow to cool completely before refrigerating for a minimum of 3 hours or overnight.

Caramelized topping

1. Just before serving, slice into your bars and sprinkle over the 2 tablespoons sugar evenly on top.
2. Blowtorch to caramelize or place under the broiler until bubbling and golden.
3. Serve up!