Preheat oven to 200C or 180C

Sift flour, baking powder and milk into a mixing bowl. Stir in sugar. Make a well in the centre of dry ingredients.

Melt butter in a small saucepan or heat-proof bowl in the microwave. Set aside to cool slightly.

Add milk, eggs and butter in to dry ingredients, along with mashed banana. Using a wooden spoon, gently mix ingredients until just combined.

Stir in choc Don't beat the mixture or the muffins will be tough

Line a muffin tray with paper cases. Scoop the mixture nto the muffin cases. Bake for 20 minutes until firm on top when lightly touched