Preheat oven to 350 degrees F and place liners in a muffin pan.
In a medium bowl, mix the flour, sugar, baking powder, baking soda and salt until well combined.
Add the butter, mashed bananas, eggs and vanilla and mix well.
Pour batter evenly into liners in muffin tin (they will be filled almost to the top) and bake for 25 to 30 minutes or until a toothpick inserted into the middle of one comes out clean.
While cupcakes are baking, prepare the frosting. In a medium bowl, mix the powdered sugar, butter, honey and ground cinnamon until smooth. I would stir with a spoon first and then use an electric mixer to get the right consistency.
Once cupcakes are done, cool completely and spread or pipe frosting on top.