How to make
Preheat the oven to 370°F (190 °C). Grease a 15x10x1 (38 x 25 x 2.5 cm) baking tray and sprinkle it with 2 tsp of flour. In a large bowl, mix the flour with the sugar, baking soda, cinnamon and salt. In small skillet, heat the water, butter and cocoa.
While constantly stirring, bring to a boil. Remove from the heat and add the flour in. With a mixer, beat well until you get a homogeneous mixture. Add the yoghurt, vanilla extract and eggs. Again, stir well. Place the dough into a baking tray.
Bake the layer for about 17-20 minutes. While the dough is baking, make the glaze. In a small saucepan heat the butter, milk and cocoa. While stirring, bring to a boil. Remove from the heat and gradually add the powdered sugar, walnuts and vanilla essence.
Pour the finished glaze over the hot layer. The dough rises slightly during cooking, so make sure to pour the glaze slowly, so it can be absorbed to some extent. Let the prepared chocolate cakes’ layer cool completely. Then cut it into 20 squares, or 40 rectangles.
