In a bowl, mix together mascarpone, cinnamon and 1 tablespoon of maple syrup.
Cut bagels in half and toast to your liking.
Melt butter in a nonstick pan over a medium heat. Add the sliced banana and fry until golden and caramelised.
Smear a generous spoonful of the mascarpone mix onto each bagel. Top with banana and extra maple syrup.