This recipe for Peanut Butter and Banana Coffee Cake is going to have you drooling. I can think of no better way to wake up in the morning than to a large slice of breakfast cake. It’s wonderful with a cup of coffee and is definitely the best way to start your day. The delicious cinnamon crumb topping paired with light and fluffy cake that’s flavored with peanut butter and banana is going to be a huge hit at breakfast!