Preheat the oven to 160°C fan. Lightly grease and line three 6 inch round cake tins with baking paper.
Add the coffee to 3 tbsp boiling water and stir until the granules have dissolved. Set aside to cool.
Cream together the light soft brown sugar, caster sugar and baking spread in a bowl for 2 mins, until light and fluffy.
Add the eggs and yolk, along with 2 large spoonful’s of the flour and beat together.
Fold the remaining flour into the mixture with the coffee and cocoa powder, using a spatula/metal spoon.
Add equal amounts of the mixture to each tin and bake in the oven for approx. 25 mins.
Leave the sponges in the tins for 10 mins, then remove and cool on a wire rack.