Preheat the oven to 350 degrees.
Spray the dog bone muffin tin with cooking spray.
In a large bowl, mash bananas with a fork or potato masher.
Add remaining ingredients and stir well with a large spoon until blended. (batter will be a little lumpy because of the bananas)
Fill dog bone muffin tin completely full with batter.
Bake for approximately 7 to 10 minutes or until a toothpick inserted in the middle is removed clean.
Thoroughly cool before adding the drizzle.