Bake this irresistible Peanut Butter Picnic Cake at home. Made with flour, brown sugar, peanut butter and butter. Easy step-by-step instructions included.
This Peanut Butter Picnic Cake relies on simple, everyday ingredients such as flour, plain, packed brown sugar, peanut butter and baking powder. It comes together quickly and makes 4 servings, at about 1896 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 Peanut Butter Picnic 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