Bake this irresistible Gooey Marshmallow Peanut Butter Brownie Cake at home. Made with condensed milk, butter, milk and cake mix. Easy step-by-step inst…
This Gooey Marshmallow Peanut Butter Brownie Cake relies on simple, everyday ingredients such as milk, large egg, lightly beaten and peanut butter chips. It comes together quickly and makes 4 servings, at about 351 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 Gooey Marshmallow Peanut Butter Brownie Cake 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