― Probably, the best kept secret about making my Peanut Butter Millionaire Fudge is what I use for the peanut butter flavor. Get ready---here it is! Reese's Peanut Butter Chips--Wha la! So simple and no measuring. Just open the bags and pour them in the bowl....Super easy! ∙ To reach a "foolproof" fudge recipe, Mamie Eisenhower ∙ introduced the wonderful ingredient of marshmallow creme. This was the first time that a candy thermometer was not needed to make fudge. She [...].