This is delicious! I made two cakes and added blueberries to the cake. I did only 1.5 the topping. I think that the topping turned out perfect! This was easy to make and I separated the batter into two round spring form pans and one 9 x 13 glass pan. I am taking 1 cake to work and another to a friend. Of course I am keeping one for home. I will be saving this recipe and making it again. Thank you for posting this wonderful recipe.
Very good crumb...TONS of crumbs!!! I cut back on the cinnamon, but I think the two tsp would be perfect. Next time I'm putting the 2 tsps in. Great recipe!