Blueberry Breakfast Cake

This is decadent without being cloying or rich. I love the custard like center and the hint of sweet cinnamon crust on top (I put my cake under the broiler for about 1 minute after sprinkling with cinnamon/sugar topping). I used ricotta and subbed fat free greek yogurt for the sour cream. The success of this cake really relies on how good your berries are - mine were ripe and juicy which made for a delicious, tender cake.