Adapted from bakeorbreak.com
cups salted peanuts (no skins), divided
cups peanut butter chips
oz sweetened condensed milk
cups miniature marshmallows
kosher salt or sea salt, optional
Place 1 1/2 cups peanuts in the bottom of an ungreased 11x7" pan. (Can also place a piece of parchment paper down first, to make removal from pan easier) Melt butter and peanut butter chips in a large saucepan over low heat. Stir until smooth. Remove from heat. Stir in condensed milk and marshmallows. Continue stirring until smooth and well blended. Pour peanut butter mixture over peanuts in pan. Sprinkle remaining 1 1/2 cups peanuts over top of peanut butter mixture. If saltier bars are desired, sprinkle lightly with salt. Cover and refrigerate until chilled. Cut into bars. Bars can be served chilled or at room temperature. These can also be made in a 9x13" pan. Use another cup of peanuts, divided between the top and bottom layers. The same amount of filling will work and give you slightly thinner bars.