As if this decadent dark chocolate cake’s flavor wasn’t glorious enough on its own, the cake is also gluten-free. Unsweetened cocoa powder plus melted bittersweet chocolate contribute to the intense chocolate flavor. The texture of the cake is dense and luscious, like classic chocolate cake meets fudge. If you choose, you can serve the dessert with tangy version of whipped cream which balances the cake’s richness: beat together 1 cup of heavy cream with 1/2 cup of crème fraiche or sour cream until soft peaks form. Make the whipped cream a few hours ahead of time, store it covered in the refrigerator, and give it a quick stir right before serving.