Chocolate Sheet Cake with Milk Chocolate Frosting

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Appears in Cook's Illustrated March/April 2017, America's Test Kitchen TV

Our cake boasts a deeply chocolaty crumb, plush frosting, and a fuss-free method. Plus, it taught us something new about cocoa powder.

SERVES 12

TIME 1 hour, plus 1 hour cooling

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WHY THIS RECIPE WORKS

For a cake that boasted deep chocolate flavor and color, we used a combination of Dutch-processed cocoa and melted bittersweet chocolate; the cocoa offered pure, assertive chocolate flavor while the chocolate contributed complexity as well ...

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