No-frills, yet the family immediately goes for the biggest piece.

Ingredients:
240 g all-purpose flour (Type 405)
180 g sugar
60 g unsweetened cocoa powder
3 eggs
250 ml milk
90 ml neutral vegetable oil
1 packet baking powder
½ vanilla bean or 1 tsp vanilla extract
A little butter and flour for the pan
Powdered sugar for dusting
Instructions:
1. Mix the flour, cocoa, baking powder, and sugar. Whisk together the eggs, milk, oil, and vanilla.
Gradually stir the wet ingredients into the dry ingredients.
2. Pour into a greased 22–24 cm pan and bake at 180°C for about 40 minutes.
3. Let cool and dust with powdered sugar.