Steps
1. Preheat the oven to 350°F (180°C) and grease a small baking dish.
2. In a bowl, mash the banana until smooth.
3. Add the oats, walnuts, raisins, honey, and cinnamon, and mix well until combined.
4. Pour the mixture into the prepared baking dish and press firmly to create an even layer.
5. Bake for 25-30 minutes, or until golden brown.
6. Allow to cool before cutting into bars.