You won't taste the pureed beets, but they make this cake extra-moist and fudgy, even with the addition of whole-grain spelt flour. They also play up the cake's full-bodied, not-too-sweet flavor. This recipe appears in our cookbook, "A New Way to Bake" (Clarkson Potter).

Martha Stewart Living, March 2017


Credit: Jonathan Lovekin

Recipe Summary

4 hrs
30 mins
Makes one 9-inch cake


Chocolate-Ganache Frosting


Instructions Checklist
  • Cake: Place beets in a steamer basket set in a saucepan containing 2 inches of simmering water. Cover and steam until tender when pierced with a sharp knife, about 25 minutes. Let cool slightly, then puree in a food processor until smooth.

  • Preheat oven to 350 degrees. Brush a 9-inch square or round cake pan with oil. Line bottom with parchment; brush parchment. In a large bowl, whisk together both flours, sugar, cocoa powder, baking soda, and salt. Whisk in eggs, water, oil, vanilla, and 1 1/4 cups beet puree (reserve remaining puree for another use, refrigerated in an airtight container up to 3 days). Pour batter into prepared pan.

  • Bake, rotating pan halfway through, until cake is set and a tester inserted in center comes out clean, about 35 minutes. Transfer pan to a wire rack and let cool 20 minutes. Invert cake onto rack; let cool completely.

  • Chocolate-Ganache Frosting: Place chocolate in a heatproof bowl. In a small saucepan, heat cream until just simmering. Pour cream over chocolate; let stand 10 minutes, then stir until smooth. Let stand, stirring occasionally, until thickened and spreadable, about 1 hour. Use immediately.

  • Place cake on a cake plate and spread evenly with frosting. Cake can be stored, covered, at room temperature up to 2 days.