Cut off ends and slice beets very thin using a knife or mandolin
Place in a medium bowl and drizzle with the EVOO and sea salt. Toss.
Let sit for 30 minutes
Preheat oven to 300 degrees
Place beets on a greased baking sheet
Bake at 300 degrees for 30 minutes.
After 30 minutes check every 5-10 minutes and take out the beets that are curled and crisp.
Total baking time will be closer to one hour, but be sure to watch them as individual beets will bake quicker than other and you don’t want them to burn.