Nutrition: Per serving
Heat the oven to 190C/170C fan/gas 5 and line a 20cm square cake tin with baking parchment. Melt the chocolate and butter together in a heatproof bowl set over a pan of simmering water, or do this in short bursts in the microwave.
Beat the eggs and sugar together in a large bowl using an electric whisk for 3 mins until light and fluffy. Add the slightly cooled chocolate and butter mixture and whisk briefly. Sift over the cocoa, then add the flour and malted milk powder. Fold everything together quickly, then scoop half of the mixture into the tin. Dot over spoonfuls of the peanut butter, then scoop the rest of the brownie mixture over the top and gently ripple the two together using a cutlery knife or skewer. Bake for 30 mins until the brownies are set and slightly cracked on top. Leave to cool completely in the tin.
If you’re making the sauce, tip the sugar and cream into a small pan and bring to the boil, then reduce the heat to low and simmer, stirring until you have a thick toffee sauce. Season with a pinch of sea salt. Cut the brownies into squares and serve with ice cream and the warm sauce, if you like. Will keep in an airtight container for up to three days.
