Bake this irresistible Yum Yum Marshamallow Bars at home. Made with brownie mix, water, marshmallows and chocolate chips. Easy step-by-step instructions…
This Yum Yum Marshamallow Bars relies on simple, everyday ingredients such as fudge brownie mix, chocolate chips, creamy peanut butter and rice krispie cereal. It comes together quickly and makes 4 servings, at about 960 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 Yum Yum Marshamallow 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