Chocolate Chip Streusel Coffee Cake

1/2 c Semi-sweet chocolate chips

1/2 c Walnuts; chopped

2 tb Flour

2 ts Cinnamon

2 tb Margarine; melted

Cake: 1 pk Yellow cake mix

8 oz Sour cream

3/4 c Water

3 Eggs

Heat oven to 350~. Grease and lightly flour 13x9 pan. In small bowl, combine all streusel ingredients; mix well. Set aside. In large bowl, combine all coffee cake ingredients at low speed until moistened. Beat 2 minutes at highest speed. Spread 2/3 of batter in prepared pan; sprinkle with half of streusel mix. Repeat with remianing batter and top with streusel mix. Bake for 35-50 minutes, or until cake tests done in center. -----