Swedish Hallongrottor Cookies (Raspberry Caves)
You can find vanilla sugar in specialty shops or in some grocery stores. I also know IKEA(R) carries boxes of vanilla sugar in their food market as well.
I have made these cookies with lingonberries, currants and/or other berry-flavored jams which also work well.
I recently tried to make these 1/2 the size using mini-muffin papers and I think I prefer them in the smaller size as they are just easier to eat. You just need to adjust the baking time to 13 to 15 minutes.