In a mixing bowl, stir together the flour, baking powder, baking soda, salt, sugar and cinnamon.
Cut in the butter with a pastry cutter until the mixture resembles crumbs.
In another mixing bowl, whisk together the egg, milk and bananas.
Add the dry ingredients to the wet ingredients and gently stir. Be careful not to overmix.
Drop 1/4-cup spoonfuls onto baking sheet, spacing two inches apart.
Bake for 12-15 minutes or until golden brown.
Remove from the oven. Let the scones cool on the baking sheet for 2-3 minutes then transfer to cooling rack to continue cooling.
Drizzle glaze over the tops and let dry for a few minutes.
Serve.
TO MAKE THE GLAZE
In a small bowl, whisk together the powdered sugar, vanilla and milk until smooth. The glaze should have enough liquid in it to drizzle onto the scones. If needed, add a little more milk until desired consistency is achieved.
Notes
TIP: If you have a food processor, place the dry ingredients into the base. Pulse a few times. Add the chopped butter and pulse until the mixture resembles coarse crumbs. Then continue with the recipe by adding the dry ingredients into the wet ingredients.