Chocolate Chip Coffee Cake

Stir together flour, baking powder, soda and salt.

In separate bowl, combine nuts, brown sugar, melted butter and cinnamon; stir in chocolate chips and set aside.

Cream 1/2 cup butter, sugar and vanilla; add eggs, one at a time, beating well after each egg.

Add flour mixture alternately with sour cream to creamed mixture, beginning and ending with flour.

Spoon 1/2 of batter in greased 10-inch tube pan.

Sprinkle with half of chocolate chip mixture. Cover with remaining batter and remaining chocolate chip mixture. Bake in preheated 350° oven 50 minutes.

Cool 10 minutes before removing from pan.