Pre-heat oven to 350. Coat a 13 x 9 baking pan with nonstick spray or line with parchment paper.
Finely crush cookies in food processor until fine crumbs form. Add melted butter and process until crumbs clump together. Press crumbs to the bottom of pan. Bake 15 minutes or until golden brown.
Melt peanut butter chips, corn syrup, butter, and vanilla in saucepan over medium low heat – stirring until smooth about 5 minutes. Spread ½ cup of that mixture over the crust.
Top with marshmallows and return to oven. Bake until marshmallows puff, about 2 minutes. Then, remove from oven. They should not be brown.
Toss peanuts and cereal with remaining peanut mixture to coat.
Drop spoonfuls of the topping over the marshmallows, then spread with a spatula (sprayed with non-stick spray to prevent sticking.)
Cool completely – cut into bars. Keep bars in an airtight container.
Recipe by Sweet Dash of Sass at http://sweetdashofsass.com/2014/12/salted-nutty-bars/