Prepare the Pan:
Lightly spray a small baking tin with cooking spray. Preheat the oven to 350°F (175°C).Mix the Batter:
In a bowl, combine the mashed banana, egg, and oats. Stir until well blended, then fold in the blueberries.Bake:
Pour the mixture into the prepared tin. Bake for 30 minutes, or until firm and lightly golden on top.Cool and Serve:
Allow it to cool slightly before serving. Enjoy warm or at room temperature.
