Walnut cake with coffee frosting - Cookidoo® – the official Thermomix® recipe platform

Ingredients

• 180 g unsalted butter
• 150 g plain flour
• 5 eggs
• 1 pinch sea salt
• 100 g walnuts
• 250 g white sugar
• 1 tsp instant granulated coffee
• 2 tsp cocoa powder
• 1 tsp baking powder
• 700 g water
• 1 ½ tbsp instant granulated coffee
• 1 tbsp boiling water
• 100 g unsalted butter
• 200 g icing sugar
• walnuts