Bake this irresistible Crispy Peanut Butter Bars at home. Made with yellow cake, peanut butter, butter and marshmallows. Easy step-by-step instructions …
This Crispy Peanut Butter Bars relies on simple, everyday ingredients such as peanut butter, miniature marshmallows, butter or ¼ cup margarine and light corn syrup. It comes together quickly and makes 4 servings, at about 1279 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 Crispy Peanut Butter Bars 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