Also made on Saturday were these, also from Leith's:
Chocolate and Peanut Butter Brownies Recipe
140g plain chocolate
110g butter
225g caster sugar
170g plain flour
1/2 tsp baking powder
170g crunchy peanut butter
3 eggs, beaten
Method
1. Preheat the oven to 170C/325F. Line a 20cm/8in square tin with non-stick baking paper.
2. Melt the chocolate, butter and sugar together in a heatproof bowl set over, not in, a pan of simmering water
3. Sift the flour and baking powder together into a large bowl.
4. Mix the peanut butter into the chocolate mixture.
5. Make a well in the centre of the flour. Add the eggs and chocolate mixture and gradually draw in the flour, using a hand whisk to beat out any lumps. Pour the mixture into the prepared tin and level out.
6. Bake in the centre of the preheated oven for 20 minutes until the crust has set on the top and a sharp knife inserted into the centre comes out slightly wet. Remove from the oven and allow to cool in the tin before cutting into squares.
NOTE: If these brownies are cooked for too long they become very dry.