3/4 c. butter, softened
1 1/2 c. sugar
3 eggs
1 1/2 tsp. vanilla
3 c. flour
1 1/2 tsp. baking powder
1 1/2 tsp. baking soda
1/4 tsp. salt
1 1/2 c. sour cream
Filling (recipe follows)

Heat oven to 350 degrees. Grease 12 cup bundt pan. In large mixing bowl, combine butter, sugar, eggs, and vanilla. Beat on medium speed for 2 minutes. Mix in flour, baking powder, baking soda and salt alternately with sour cream. Spread 1/3 of batter (about 2 cups) in pan and sprinkle with 1/3 of filling (about 6 tablespoons). Repeat twice.

Bake 60 minutes or until wooden toothpick inserted in center comes out clean. This is my best coffee cake recipe and the one that always gets the most compliments.

FILLING: Mix 1/2 cup packed brown sugar, 1/2 cup finely chopped walnuts and 1 1/2 teaspoons cinnamon.