I was craving these today so I looked for a recipe and I thought this one turned out pretty good. Incredibly easy, too! :)
Stir: 1 cup peanut butter, 1/2 cup butter (or margarine), and 300 grams butterscotch chips on very low heat, stirring constantly till blended. Let cool enough so that it won't melt the marshmallows.
Mix in 200 grams mini marshmallows.
Pour and spread into a greased 11 x 13 pan.
Put in fridge and cut into squares when hardened.