This is one of my top five all-time favorites! Adapted from "Cook's Illustrated" this rich coffee cake is unique in that it does not contain milk, does not get soggy, despite the 4 cups of blueberries suspended in batter. Nearly identical to "Einstein Bagel's" Blueberry Crumb Cake. Note: I've made this on vacation several times by hand, creaming the butter with a spoon. Despite the lengthy directions it takes about 10 minutes to put together.