Chocolate Streusel Coffee Cake

This terrific cake was adapted from pastry chef Claudia Fleming’s gift to her customers when she was at 11 Madison Park. At the end of dinner, she presented it for the diner to enjoy for breakfast the next morning. I love how the cocoa streusel becomes chocolaty during baking and forms an attractive undulating layer in the middle of each slice of cake. If desired, you can make a total of twelve cupcakes instead of using the tube pan.