1. Line 8 x 8 inch pan with non stick foil, non stick side up. Leave additional 3 inches on each end to lift finished candy from pan. Combine marshmallows and peanuts in large container.
2. Place butterscotch and chocolate chips and peanut butter in medium microwave safe bowl. Microwave on high for 45 seconds. Stir well. Microwave on high for 30 seconds, stirring well. If chips are not melted repeat in 20 second bursts until mixture is smooth.
3. Pour melted chips and peanut butter over marshmallows and peanuts. Quickly stir until marshmallows and peanuts are fully coated. Pour into prepared pan, pressing mixture into place until pan is evenly filled.
4. Refrigerate overnight or until very firm. Lift from pan using aluminum foil “handles” and slice into bars with very sharp knife.

To double recipe, multiply all measurements by 2. Melt chocolate and butterscotch chips in saucepan over low heat rather than using the microwave. Add peanut butter and stir. Add peanuts and stir. Remove from heat and stir in marshmallows. Pour into 9 x 13 pan lined with foil or parchment paper and spread evenly.