Ingredients

280g cubed butter
250g chopped dark chocolate
150g caster sugar
150g brown sugar
1 teaspoon vanilla extract
1 teaspoon instant coffee
5 large eggs
170g plain flour
125g cocoa
70g hulled tahini

Instructions

1.Heat the oven to 180°C.
2.In a bowl set over a pot of simmering water (make sure the base of the bowl isn’t touching the water), melt together cubed butter, chopped dark chocolate, caster sugar, brown sugar and vanilla extract.
3.Take off the heat and, one at a time, mix in eggs.
4.Sift over plain flour and cocoa and fold through then pop the batter into a lined medium brownie tin.
5.Dollop over hulled tahini and use a wooden skewer to swirl into the batter.
6.Bake for 25 minutes.