Layer 1/2 jar of peanuts on bottom of pan.
Melt butter and peanut butter chips.
Add sweetened condensed milk and barely heat.
Add marshmallows. DO NOT MELT these.
Stir and layer onto peanuts in pan.
Press mixture down and top with the rest of the peanuts.
Cool and cut into bars.
Tastes like the candy bar - Salted Nut Roll.