Preheat oven to 180°C and grease a 12 hole muffin tin. Set aside.
Combine flour and cinnamon in a large bowl. Add mashed bananas, milk, butter and sugar and stir until well combined. Divide mixture between muffin tin.
For the crunchy oat topping, combine oats, honey and cinnamon in a small bowl.
Divide oat mixture evenly amongst the muffin tin and bake for 20 minutes or until skewers come out clean.
Enjoy as they are or serve them warm with a drizzle of maple syrup and ice cream.
Notes
For nice tall muffins, make sure to fill your cases right to the top!