Bake this irresistible Banana Marshmallow Squares at home. Made with yellow cake, butter, eggs and nuts. Easy step-by-step instructions included.
This Banana Marshmallow Squares relies on simple, everyday ingredients such as butter, softened, eggs, chopped nuts (or to taste) and filling. It comes together quickly and makes 4 servings, at about 391 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Banana Marshmallow Squares delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.
Updated Jun 30, 2026