Chocolate Sheet Cake with Vanilla Buttercream
Cocoa powder and melted chocolate give this classic Chocolate Sheet Cake with Vanilla Buttercream deep, well-rounded flavor. Inspired by devil’s food cake, it's a party-perfect dessert that's rich but not overly sweet.
To make the chocolate curls, pop a semisweet chocolate bar (we like Ghirardelli) in the microwave on a plate to soften, 5 to 10 seconds. Then shave into curls with a vegetable peeler directly over the cake, or onto a parchment-lined baking sheet.