Coffee Cake with Hazelnut Streusel Topping

These individual coffee cakes are richly flavored but light, so they almost melt in your mouth. There's a crunch on the outside from hazelnut streusel topping and soft interior crumb. The cakes are finished with a dusting of cocoa powder, powdered sugar, and cinnamon, just a hint, so there are all kinds of flavors here. The coffee cakes are best the day they are baked, but they can be wrapped individually in plastic wrap and frozen. Defrost frozen cakes at room temperature, and rewarm if desired.