What's the single most addictive substance known to man? Nope, it's not a drug. If you ask us, the most addictive thing in the world is cookie butter. That glorious blend of oil, sugar and powdered cookies goes wonderfully on anything from toast to English muffins. It's also great on a spoon. Are you already one of cookie butter's legion of fans? Enjoy that flavor without the calories with Stumps Don by Charlie's Chalk Dust.