Preheat Air Fryer to 350F / 180C. Separate wrappers and lay one onto a plate. Roughly mash bananas until smooth and then stir in the 2 tablespoons of peanut butter.
Place about 1 ½ tablespoons of banana filling into each wrapper and fold the sizes and then roll the spring roll tightly. Dip your finger in the water and pat it on the edge to seal.