Step 1

Melt the chocolate and butter in a double boiler (see here). Once the chocolate and butter melted set aside and stir nicely with a spatula to make sure the mixture is smooth and lump free.

Step 2

Sift the flour, baking powder, salt and coffee powder together in a separate bowl.

Step 3

In the melted chocolate beat in sugar, vanilla, chocolate essence for 3 - 4 minutes at low speed.

Step 4

Alternatively mix in sifted flour, walnuts and milk until all moistened and combined well. Do not mix the batter for too long.

Step 5

Preheat the oven to 180 degree celcius. Grease an 8 inch square tin and line with a parchment paper.

Step 6

Pour the mixture into the prepared tin and bake for 25 minutes.

Step 7

Remove from the oven and place on a wire rack to cool. Cut into squares and serve hot with vanilla ice cream.