1

Preheat oven to 325°F.

2

Prepare cake: Cream butter, sugar and vanilla in bowl; add eggs and beat well. Combine flour, baking powder, and baking soda. Add ingredients to butter mixture, alternating with sour cream. In another bowl, combine pumpkin, egg, 1/3 cup sugar, and pie spice. Keep separate.

3

Prepare topping: Mix topping ingredients together with fork or hands until crumbly. Set aside.

4

Spoon half batter mixture into 9x13" pan. Sprinkle half of the topping over the batter. Spread the pumpkin mixture over the streusel. Carefully spread the remaining batter over the pumpkin mixture. Sprinkle remaining topping.

5

Bake 50-60 minutes, or until toothpick inserted in center comes out clean.