Brownies

Preparation:

1. Preheat oven to 175°C.
2. Butter a baking tray (i.e. 28x30 cm), line with baking paper.
3. Place the chocolate and the butter in a medium heat-resistant bowl, over a saucepan of simmering water and stir until melted and smooth.
4. Remove the bowl from the heat and let it cold down.
5. In a separated bowl, combine the chopped walnuts with flour and salt.
6. In the chocolate-butter-bowl, add the sugar, vanilla sugar, orange zest and stir well for 1 minute with an electric beaters.
7. Add in the eggs and stir for more 2 minutes.
8. Incorporate the walnut-mixture and blend with a large spoon.
9. Pour batter into prepared baking tray and smooth the surface.
10. Bake for 30 minutes and check, if a knife inserted into center comes out clean.
11. Remove from oven and cool completely in the baking tray.
12. Cut into pieces and serve.