use two 18 cm / 7 '' loaf pans • unsalted butter, room temperature • granulated sugar • eggs (180g, 6.3 oz, without shell) • ground almonds • vanilla bean paste • cake flour or all-purpose flour • baking powder • chocolate chips • cake flour or all-purpose flour • (2 and 1/2 Tbsp) cocoa powder, sugar-free • baking powder •