Cinnamon-Chocolate Chip Sour Cream Coffee Cake

I first saw a picture of this coffee cake on an  eGullet breakfast post.  Shared by Deena of Mostly Foodstuffs.  The picture of this cake was so appealing I knew that I would be baking it for breakfast one morning.   I found the recipe for the cake on Deena’s Blog Mostly Foodstuffs.     This is…