Combine sugar, butter and milk in a medium size heavy saucepan. Boil until sugar has dissolved over medium heat, sirring constantly. Cook to the soft ball stage, which takes about 15-20 minutes once boiling. Remove from heat and add remaining ingredients. Beat until mixture has thickened then pour into a buttered 2 1/2 quart oblong glass dish. Cool and cut.
Note: I also use creamy peanut butter sometimes. I also like the extra crunchy but it's hard to find.