Chocolate Chip Cake

1/2 cup butter
1/2 cup sugar
1 tsp. vanilla
2 eggs
1 cup sour cream
1 tsp. baking powder
2 cups flour
1 tsp. baking soda
1/4 tsp. salt
12 oz. (1 bag) choclate chips

Cream together butter and sugar; add vanilla, eggs and sour cream; mix well. Sift dry ingredients and add to wet mixture. Add 3/4 of the choclate chips. Pour into greased and floured tube pan (or brownie pan) and sprinkle with remaining chocolate chips. Bake at 350 degrees for 45 minutes.