1/2 c. butter
1 tsp. vanilla extract
2 c. all purpose flour
1 tsp. baking soda
1 3/4 c. (16 oz. can) solid pack pumpkin
1/3 c. sugar
Streusel
3/4 c. sugar
3 eggs
1 tsp. baking powder
1 c. sour cream
1 egg, slightly beaten
1 tsp. pumpkin pie spice

Cream butter, 3/4 cup sugar and vanilla in mixer bowl. Add 3 eggs, one at a time, beating well after each addition. Combine flour, baking powder and baking soda. Add dry ingredients to butter mixture alternately with sour cream.

Combine pumpkin, beaten egg, 1/3 cup sugar and pie spice. Spoon half of batter into 13 x 9 inch baking dish; spread to corners. Sprinkle half of streusel over batter. Spread pumpkin mixture over streusel. Carefully spread remaining streusel over top. Bake in 325 degree oven for 50-60 minutes or until toothpick inserted in center comes out clean.

STREUSEL:

Cut 1 cup firmly packed brown sugar, 1/3 cup butter, and 2 teaspoons cinnamon together until well blended; stir in one cup chopped walnuts or pecans.