I'm sure you'll get a range of responses but I'm just going to tell you that I find eating fruits as much as I want (and dialing back the fat) helps me from craving any sort of processed sweets.
Others might tell you to cut carbs out completely for a while.
Fructose is not that bad when it comes from fruit...in fact it's not bad at ALL.
Otherwise, you just have to stick to clean eating for a while. The longer you give things up the less you will crave them. At this point I barely even care for most sweets/desserts.