Method

• When there is half an hour left before baking, preheat the oven to 200 ºC.
• Melt the chocolate in a bain-marie and let it cool until lukewarm.
• Beat the whole eggs with a pinch of salt and the sugar using beaters for about 2 minutes; they should not rise much.
• Add the lukewarm chocolate to the eggs and stir with a spatula.
• Gradually add the sifted flour, stirring constantly to prevent lumps from forming.
• Add the softened butter while continuing to stir.
• Incorporate the chopped walnuts and stir the batter.
• Grease the mould with butter and lightly flour it.
• Fill the mould with the batter and level the surface with a spatula.
• Place whole walnut halves on top of the batter, forming rows.
• Bake at 200 ºC for about 25 minutes.
• Let the brownie cool and dust it with icing sugar on top.