TOPPING:

1 pkg. Pillsbury white frosting mix (dry)
6 oz. chocolate chips or peanut butter chips
1 tsp. cinnamon
1 c. chopped pecans

CAKE:

1 box yellow cake mix
1 c. water
1/2 c. sour cream
3 eggs

Blend topping ingredients in small bowl. Set aside. Blend cake ingredients in large bowl. Mix for 2 minutes at high speed. Pour half the cake batter into greased and floured 13"x9" pan. Sprinkle half the topping over batter. Repeat layers. Bake at 375 degrees for 30 to 40 minutes.