I have seasoned many of them. I do it this way. Evenly coat the skillet inside and out including the handle with Crisco. Place in 350 degree oven with the skillet facing down so the shortening can drip off and not stay in the skillet or it will bake into a sticky goo. Place foil on bottom of oven to catch the drips. Let bake for about 30 min. Turn off oven and let skillet cool inside the oven. I do this about six times for the skillet to get well seasoned. When I'm baking I season the skillet along with what I'm baking until it is jet black shinny and smooth. The more the skillet is used the more non stick it will be. The new pre seasoned cast iron gives you a head start but it still needs to be seasoned this way.