Surprise Devil's Food Cake

The ‘surprise’ in this devil’s food cake is the grated beets folded into the batter, which disappear completely in the chocolate but leave behind two gifts: moisture and a deeper, almost fudgy crumb. Beets don’t taste like beets here; they contribute earthiness that amplifies the cocoa, the same way red wine does in a stew.

Cocoa powder (not melted chocolate) does all the chocolate work, paired with buttermilk for tang and tenderness. The natural acidity of the buttermilk activates the baking soda, giving the cake its characteristic open, tender crumb.

The method is a one-bowl whisk, no mixer needed. Combine dry, whisk in wet, stir in beets, pour, bake. Forty-five minutes later, you have a 13×9 sheet cake ready for frosting, glaze, or just a dust of powdered sugar.

This cake is also a sneaky way to get a vegetable into dessert. Kids will never catch on.

Pro Tips

• Grate beets fine; coarse shreds show as red flecks in the finished cake.
• Use raw beets, not cooked. Raw release their moisture into the batter during baking.
• Use natural cocoa (not Dutch-processed) since the recipe relies on cocoa’s acidity to activate baking soda.
• Cool completely before frosting; warm cake melts buttercream.

Variations

• Frost with cream cheese frosting, classic ganache, or a thin chocolate glaze.
• Add ½ teaspoon cinnamon or a pinch of cayenne to the batter for warmth.
• Bake as cupcakes instead (22 to 25 minutes at the same temperature).