Bake this irresistible Blondie-Brownie Peanut Butter Cup Sandwiches at home. Made with yellow cake mix, egg, butter and peanut butter. Easy step-by-step…
This Blondie-Brownie Peanut Butter Cup Sandwiches relies on simple, everyday ingredients such as box yellow cake mix, large egg, unsalted butter, melted and creamy peanut butter. It comes together quickly and makes 4 servings, at about 456 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 Blondie-Brownie Peanut Butter Cup Sandwiches 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