
Creado con IA
Preheat the oven to 175°C (350°F). Grease and line a 20 cm (8-inch) round cake pan with parchment paper.
Prepare the crumb topping: combine 40 g of the flour, 40 g of the sugar, 30 g of the softened butter, and 60 g of the chopped walnuts. Rub the mixture together with your fingertips until coarse crumbs form, then set aside.
Warm the milk slightly, add the instant coffee powder, and stir until dissolved. Let the coffee mixture cool to room temperature.
In a medium bowl, whisk together the remaining 160 g flour, baking powder, and salt.
In a large bowl, beat the remaining 50 g softened butter with the remaining 80 g sugar until light and creamy.
Add the eggs one at a time, beating well after each addition. Mix in the vanilla extract.
Add the flour mixture in three additions, alternating with the coffee-milk mixture in two additions. Mix gently after each addition until just combined.
Fold the remaining 40 g chopped walnuts into the batter.
Transfer the batter to the prepared pan and smooth the top. Sprinkle the walnut crumb mixture evenly over the batter.
Bake for 35–45 minutes, or until the topping is golden and a toothpick inserted into the center comes out clean or with a few moist crumbs.
Cool the cake in the pan for 15 minutes, then remove it from the pan and transfer it to a wire rack to cool before slicing.