Instructions: Heat the oven to 350 degrees. Grease and flour a 9-inch round cake pan.

Combine the flour, brown sugar, granulated sugar, cinnamon and oil in a large bowl, mixing well. Remove 3/4 cup and set aside.

Whisk together the baking powder, baking soda, egg and buttermilk in a small bowl. Let stand 5 minutes. The mixture should about double in size and be a bit bubbly. Blend it into the flour mixture. Pour the batter into the cake pan.

Mix the walnuts with the reserved 3/4 cup topping and sprinkle over the top. Bake the cake for 10 minutes, then reduce the heat to 325 degrees and bake until a toothpick inserted in the middle comes out clean, 45 minutes. Cool the cake on a wire rack 10 minutes before cutting. Serve warm.

This recipe yields 8 servings.

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