Preheat the air fryer to 160°C (320°F) and grease and line a 2lb loaf tin (or whatever size tin you are using) with baking paper.
Cream together the softened butter, caster sugar, and light brown sugar in a large mixing bowl until pale and fluffy.
175 g Unsalted Butter, 100 g Caster Sugar, 75 g Light Brown Sugar
Beat in the eggs and vanilla extract.
3 Eggs, 1 tablespoon Vanilla Extract
Fold in the flour, then add the mashed bananas and 50g of chocolate chips. Mix until combined.
200 g Self Raising Flour, 2 Overripe Bananas, 50 g Milk Chocolate Chips
Spoon the batter into the prepared tin and sprinkle over the remaining 50g of chocolate chips.
50 g Milk Chocolate Chips
Air fry for 55 minutes to 1 hour, checking for doneness after 45 minutes as air fryers may vary. Cover the tin with foil after 30 minutes to avoid excessive browning. Allow the banana bread to cool thoroughly before taking it out of the tin and slicing.