Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large bowl, cream the softened butter and brown sugar until light and fluffy. Add mashed banana, egg, and vanilla, mixing well.

In another bowl, whisk together the flour, banana pudding mix, and baking soda until smooth.

Gradually combine the dry ingredients with the wet ingredients, stirring gently.

Fold in the white chocolate chips until evenly distributed.

Roll small portions of the dough into balls and place them on the prepared baking sheet.

Bake for 10-12 minutes until edges are lightly golden.

Cool on the baking sheet for about 5 minutes before transferring to a wire rack.