Line a baking sheet with parchment paper and spread the seeds out. Drizzle with the salt, brown sugar, olive oil, balsamic vinegar and vanilla extract. Toss to combine and spread out in a thin layer.
Bake for about 10 minutes, then start watching them. They will take about another 5-10 minutes to get golden.
Let cool and store in an airtight container.
Notes
A flavored vinegar - like cranberry walnut is also good in place of the balsamic.