- 3/4 cup whole-wheat pastry flour, plus
- 2 tablespoons whole-wheat pastry flour
- 1/2 cup sugar (see Ingredient notes)
- 1/3 cup unsweetened cocoa powder
- 1 teaspoon baking powder
- 1 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 cup buttermilk or equivalent buttermilk powder (see Ingredient notes)
- 1/2 cup packed light brown sugar
- 1 large egg, lightly beaten
- 2 tablespoons canola oil
- 1 teaspoon vanilla extract
- 1/2 cup hot strong black coffee
- Confectioners' sugar, for dusting
- Preheat oven to 350 degrees F. Coat a 9-inch round cake pan with cooking spray. Line the pan with a circle of wax paper.
- Whisk flour, granulated sugar (or Splenda), cocoa powder, baking powder, baking soda and salt in a large bowl. Add buttermilk, brown sugar (or Splenda), egg, oil and vanilla. Beat with an electric mixer on medium speed for 2 minutes. Add hot coffee and beat to blend. (The batter will be quite thin.) Pour the batter into the prepared pan.
- Bake the cake until a skewer inserted in the center comes out clean, 30 to 35 minutes. Cool in the pan on a wire rack for 10 minutes; remove from the pan, peel off the wax paper and let cool completely. Dust the top with confectioners sugar before slicing.