Preheat oven to 200 degrees and line a 12 hole muffin tin
Sift flour, cinnamon and bicarb soda into a bowl, add the rolled oats and sugar and stir to combine
Whisk eggs, yoghurt and oil together, add mashed banana and stir to combine
Pour into bowl with dry ingredients and mix with a wooden spoon until just combined - mixture will still be lumpy
Spoon into muffin tin and bake for approx 20 minutes or until lightly golden and cooked through.
Leave to cool in cases for 5 minutes and then remove from tin.