Salted Nut Roll Bars
This bar covers the spectrum of tastes and textures: Crunchy, chewy, salty, sweet—they’re all in here.
Preheat oven to 350°. Coat a 9×13-inch baking pan with nonstick spray.
Pulse cookies for the crust in food processor until fine crumbs form. Add melted butter; process until crumbs clump together, then press into prepared pan. Bake crust until golden, about 15 minutes; remove from oven and leave oven on.
Melt peanut butter chips, corn syrup, 4 Tbsp. butter, and vanilla for the topping in saucepan over medium-low heat, stirring until smooth, about 5 minutes.
Spread ½ cup peanut butter mixture over the crust.
Top the crust with marshmallows and return pan to oven. Bake bars until marshmallows puff up, about 2 minutes, then remove from oven. Do not let the marshmallows brown or they’ll turn crunchy.
Coat peanuts and cereal with remaining peanut butter mixture, then drop spoonfuls over marshmallows; press with a spatula to even out. Cool bars completely before cutting.