Preheat oven to Fan Forced 180°. Line a 12 holed muffin tray with either cut baking paper squares or patty pans.

Cream both sugars and soften butter.

Sift both flours and cinnamon into wet ingredients. Stir until well mixed.

Add mashed banana and blueberries. Stir with a wooden spoon to combine, be sure not to over mix.

Bake for 25 minutes. Once finished let them rest in the tray for 5 minutes and transfer to a wire rack to cool completely.