Grease a 9x13 inch pan. In a bowl, melt the butter, peanut butter, and the butterscotch chips in the microwave, stiring occasionally until smooth.
2
Let stand to cool until the mixture is warm to the touch (if you can leave your finger in it comfortably for 5 seconds, then it is ready). Add marshmallows. Fold until all the marshmallows are covered.
3
Put in baking dish. Chill in fridge for about 2 hours(or until hardened). Serve and enjoy!