# Preheat the oven to 200°C, gas mark 6. Line a 12 hole muffin tin with muffin cases.
# Sift the flour into a large bowl and mix in the oats and sugar.
# In a separate bowl mash the banana and mix in the peanut butter, eggs, butter and milk. Stir into the flour mixture.
# Spoon into the muffin cases and bake for 20 minutes or until golden. Cool on a wire rack.