Mary Berry Mars Bar cake is a classic British fridge cake where chopped Mars bars are melted with butter to create a sticky caramel-chocolate base. Crushed biscuits are folded in for texture, and the mixture is set in the fridge before being topped with melted chocolate. The result is a sliceable cake that is chewy, crunchy, and chocolatey all at once.
Mars bars – 6 standard bars (about 230 g), chopped
Unsalted butter – 100 g
Digestive biscuits – 200 g, roughly crushed
Milk chocolate – 200 g, broken into pieces
Prepare the tin – Line the base and sides of the tin with baking parchment.
Melt Mars bars and butter – Place the chopped Mars bars and butter in a saucepan over low heat, stirring gently until completely melted and smooth.
Crush the biscuits – Break the digestives into chunky crumbs, keeping some texture.
Combine the mixture – Remove the pan from the heat and stir in the crushed biscuits until evenly coated.
Press into the tin – Spoon the mixture into the prepared tin and press down firmly with the back of a spoon.
Melt the chocolate topping – Melt the milk chocolate gently over low heat or in short microwave bursts.
Add the topping – Pour the melted chocolate over the biscuit base and spread evenly.
Chill to set – Refrigerate for at least 2 hours, or until firm.
Slice and serve – Cut into squares using a warm knife for neat edges.
Find it online: https://maryberrycooks.co.uk/mary-berry-mars-bar-cake/