Vanilla sugar is made by infusing coarse granulated sugar with vanilla beans. The sugar is then used in coffee, tea, over fresh fruit. You can also sprinkle the sugar atop baked goods before baking to give then a hint of sweet vanilla.
You can purchase vanilla sugar in specialty shops like Willams-Sonoma or Sur la Table. A reliable brand is Nielsen-Massey. Otherwise you can make your own. See recipe below.