This recipe comes from our very dear family friend, Linda Barrick. She is one of the best bakers I know! These salted nut roll bars are reminiscent of the candy bar, but even better! This recipe makes a big batch so it’s perfect for sharing with loved ones or taking to a party. Be prepared for people to ask for the recipe!
Preheat oven to 350° and grease a 15.5 x 10.5 inch jelly roll pan or line with parchment paper.
In a medium bowl, mix the yellow cake mix, water, melted butter, and egg until blended. Spread into the prepared jelly roll pan in a thin, even layer. Bake for 10 minutes.
Immediately sprinkle the base layer evenly with the miniature marshmallows. Return to the oven and bake for an additional 3-4 minutes or just just until marshmallows have puffed. Do not let the marshmallows brown.
In a glass microwavable bowl, place the butter slices, corn syrup, and peanut butter chips and stir. Microwave until melted, stirring after 30 second intervals.
Pour the peanut butter mixture over the puffed marshmallows and gently press the salted peanuts over the top.
Let bars cool completely before cutting. If desired, the bars may be stored in the refrigerator for firmer texture.