Try this Easy Peanut Butter Fudge recipe, or contribute your own.
A raw ingredient list cannot explain the physical transformation occurring inside a saucepan when sugar and milk reach a rolling boil. Sucrose molecules dissolve completely in the liquid base, creating a supersaturated solution that relies on precise cooling to form fine crystals rather than a grainy paste. Using a heavy-bottomed medium saucepan prevents hot spots that scorch dairy solids before the sugar fully dissolves. Stir constantly during the 2½ minute boiling phase to ensure uniform heat distribution across the entire volume.
Success depends entirely on the moment heat is removed. Stirring in the creamy peanut butter and vanilla extract while the mixture is piping hot drops the temperature rapidly and initiates the formation of micro-crystals. If the mixture is disturbed while cooling in the glass container, large sugar crystals will form and produce a gritty texture. Allow the block to set undisturbed at room temperature for a minimum of one hour before slicing it into twelve uniform pieces.