These cookies deliver classic banana cream pie flavor in one delightful handheld bite. Soft, fluffy, and topped with dreamy cream, they are perfect for any occasion.
Preheat the oven to 350 F and line two baking sheets with parchment paper.
Beat the butter, brown sugar, and granulated sugar until creamy. Mix in the mashed banana, egg yolk, and vanilla until evenly combined.
Whisk the flour, cornstarch, baking powder, cinnamon, and salt in a separate bowl. Add the dry ingredients to the banana mixture and mix just until combined.
Divide the dough into 14 portions and place them at least 2 inches apart on the prepared baking sheets. Bake for 11 to 13 minutes, until the edges are set and the centers spring back lightly.
Cool the cookies completely. Meanwhile, whip the cold cream, powdered sugar, banana pudding mix, and vanilla until thick, smooth peaks form.
Spoon or pipe the banana cream topping onto the cooled cookies. Sprinkle each cookie with crushed vanilla wafers and refrigerate for 20 minutes before serving.