1.   Carefully spoon the remaining batter over the filling, using the rubber spatula to smooth the batter.

2.   Add cocoa to remaining batter, mix to blend well, and fold in chocolate chips.

3.   Carefully spread remaining batter over pumpkin mixture.

4.   Carefully turn remaining batter into large bowl.

5.   Continue with remaining batter.

6.   Continue with the remaining batter.

7.   Drop spoonfuls of remaining white batter onto chocolate batter.

8.   Pour half of batter into pan, top with streusel and spoon remaining batter over streusel.

9.   Pour remaining chocolate batter into pan.

10.   Pour remaining batter into prepared pan.