Step 1

Preheat oven to 350°F. Grease a 9-inch springform pan with cooking spray. Set aside.

Step 2

In a large bowl, stir together flour, sugar, whole wheat flour, cornmeal, ginger, cinnamon, nutmeg, and pepper.

Step 3

Using a pastry cutter or two forks, cut in butter until mixture resembles coarse crumbs. Remove ¾ cup of crumb mixture for topping and set aside.

Step 4

In a medium bowl, combine eggs, pumpkin, molasses, buttermilk, and baking soda.

Step 5

Add pumpkin mixture to crumb mixture in large bowl. Stir until just moistened.

Step 6

Spread batter into prepared pan. Sprinkle with reserved ¾ cup crumb mixture.

Step 7

Bake for 55-60 minutes, or until a toothpick inserted into center of cake comes out clean. Cool in pan on a wire rack for 30 minutes.