Preheat the oven to 170c. Line a muffin tin with paper cases.
Peel and mash the bananas.
Measure the flour, baking powder, sugar and sieve it into a mixing bowl.
In a jug, whisk together the oil, yoghurt and 2 eggs. Pour into the mixing bowl along with the mashed banana. Add the chocolate chips and gently mix to combine.
Scoop into the paper cases, sprinkle on an extra few chocolate chips.
Bake for 25-28 minutes until golden. Put on a wire rack to cool.
