397gramssweetened condensed milk (1 tin - full cream)
50gramsgolden syrup(light corn syrup/maple syrup)
125gramsbutter
2teaspoonsea salt(salt to taste)
½teaspoonvanilla extract
Chocolate Topping
180gramsdark chocolate
30gramsbutter or coconut oil
Instructions
Whipped Shortbread Base
Preheat the oven to 200°C/390F/Gas Mark 6. Grease and line a 20-23 cm square cake tin with parchment paper leaving an overhang to allow for easy removal of the slice.
Soften the butter to a whipping consistency. If room temperature butter is not soft enough, pop in the microwave for 15-second bursts until soft but not melted. Beat the butter, caster sugar, icing sugar together using a stand mixer, electric handheld mixer or whisk until the butter is light, fluffy and aerated.
Add in the flour and salt, mixing with a spatula or wooden spoon until a soft pliable dough forms. Press this dough into the bottom of the prepared tin. Use the back of a cup measurer or offset spatula to really press the dough into the pan. Prick the dough with a fork throughout and bake for 15 minutes until the biscuit base is a nice light golden brown.
250 grams plain flour, ½ teaspoon table salt
Allow the biscuit base to cool in the tin while you make the caramel filling.
Caramel Filling
Place the butter, syrup, sugar, condensed milk in a medium-sized saucepan and bring to a boil, stirring the entire time all the ingredients are melting together. Once the caramel has started to heat up and boil, whisk/stir constantly for 5 to 10 minutes until the caramel has started to thicken and brown. To test the caramel, take a cold teaspoon or knife and dip it in, if it sets up fairly quickly the caramel is done. Take off the heat and stir through the salt and vanilla.
100 grams light brown sugar, 397 grams sweetened condensed milk, 125 grams butter, 2 teaspoon sea salt, ½ teaspoon vanilla extract, 50 grams golden syrup
Pour the caramel filling over the biscuit base and bake at 180°C for 10-15 minutes. Once the edges have just started to caramelize, remove from the heat and allow to cool completely.
Chocolate Topping
In a heatproof bowl, place the chocolate and butter or oil, and zap in 20-30 second increments until the chocolate is melted, stirring after each interval. Alternatively, melt the chocolate in a glass dish over a pot of water on the stove. Do not let the water touch the bottom of the glass bowl. Do not get water into the chocolate, the chocolate will seize.
180 grams dark chocolate, 30 grams butter or coconut oil
Pour the chocolate over the cooled caramel filling, and spread evenly using the back of a spoon or offset spatula. Allow the slice to cool completely before slicing. You can place the entire tin into the fridge for at least 2 hours or overnight.
All temperatures stated are for conventional ovens. Decrease the temperature by 20°C/25°F or gas mark 1 for "fan" or air-fryers.
Video
Notes
125g butter = 1 stick plus 2 tbspCondensed milk must be the full cream variety, this ensures the caramel filling will set to a slicing consistency.Baking the caramel filling also ensures that the caramel filling will set completely to slicing consistency.Dark or milk chocolate can be used for the chocolate topping. In this particular recipe, I used Whittaker's 50% dark chocolate.To get clean even slices, mark your slice using a ruler, and then warm up your sharp knife in hot water, wipe dry and cut. By warming up the blade and wiping it clean in between each slice you will get perfect slices.For fan-forced or fan-assisted ovens decrease the temperature by 20°C/25F.