1 Prepare Everything In Advance And Have Ready To Go - Chopped Chocolate, Chopped Nuts, Best To Have Marshmallow Cream Already Out Of The Jar And In A Bowl That You Can Easily Scrape Out With A Rubber Spatula. Line A 13"X9"X2" Baking Pan With Foil, Butter The Inside (Alternatively, Line The Pan With Waxed Paper). 2 In A 3-Quart, Thick-Bottomed Saucepan, Bring Sugar, Butter, And Milk To A Rolling Boil On Medium Heat, Stirring Constantly Once The Mixture Begins To Bubble. Once The Mixture Reaches A Boil, Set Your Timer To 4 Minutes. You Will Want To Remove The Mixture From The Heat Once It Reaches 234