Two classic brown-bag favorites—PB&J and brownies—mix in this treat. Enjoy creamy peanut butter-spiked frosting and dollops of jelly without a battle over trimming off the crust.
Use chocolate instead of peanut butter chips if you like.
For smooth swirling, stir the jelly before dropping it onto the frosting.
Feel free to use whichever jelly you have on hand in place of strawberry.