Preheat oven to 350F.
Cream together butter and sugars until light and fluffy. Add in eggs, one at a time, mixing until incorporated, then add in bananas.
Sprinkle salt, baking soda, and baking powder over, then stir in. Mix in flour, then add in cinnamon chips.
Grease a bundt pan; flour and tap out excess. Pour batter into prepared pan.
Bake for 45-50 minutes, or until a toothpick comes out clean. Allow cake to cool.
Mix together powdered sugar, butter, corn syrup, milk and vanilla in a large measuring cup. Pour over cake. Sprinkle with cinnamon sugar, if desired.