I made this a few weeks ago & it's so good. It's really simple, too. All you do is put a bunch of sugar in a container that you can seal. Then put a few vanilla beans into it. Keep them covered by the sugar. Stir it every other day or so, but you need to let it sit for a minimum of 2 weeks before the vanilla flavor will be infused throughout the sugar.
This tasty sugar can be sprinkled on anything sweet: cookies, mixed into homemade ice cream, on top of fruit, etc. It also smells amazing!
I found vanilla beans at Costco.