In this stunning dessert, a moist and soft chocolate poundcake is topped   on two sides — bottom and top — with crunchy, slightly salty streusel   flecked with chocolate chips. The combination of cocoa powder and melted   dark chocolate gives this cake a particularly rich flavor. You can make   it up to 3 days ahead. Store it at room temperature, well wrapped in   foil. Then serve it topped with ice cream or whipped cream and fresh   berries, or toasted and buttered, or plain as it is. It also freezes   well for up to 3 months.
Featured in "The Bittersweet Kiss of Chocolate," by Melissa Clarke. New York Times, February 6, 2015