Emily ParkerBy Emily Parker

Updated November 2026

To season cast iron skillet, you clean off any factory coating or rust, dry the pan completely, wipe on a very thin layer of oil, and bake it upside down at a high temperature. Repeat the oil-and-bake cycle a few times and you end up with a hard, slick polymerized layer that resists sticking and rust. The process takes about an hour of active work plus cooling time.

What You Need Before You Start

Gather your supplies first so you aren’t scrambling once the oven is hot. You will need a pan that is clean of food residue, a lint-free cloth or paper towels, a neutral oil with a high smoke point, and a rimmed baking sheet or sheet of foil to catch drips.

Shopping for one? See our guide: 7 Best Flaxseed Oils to Season Cast Iron Skillets with Flaxseed Oil (2026).

  • Dish soap and a stiff brush or nylon scrubber
  • Paper towels or a lint-free cotton cloth
  • Refined vegetable, canola or grapeseed oil
  • A rimmed baking sheet or foil
  • Oven mitts

How to Season Cast Iron Skillet in Six Steps

  1. Clean the pan. Wash it with warm water and a small amount of dish soap. Scrub off any old residue, then rinse and dry it right away.
  2. Dry it fully. Set it on a burner over low heat for two to three minutes until every drop of water has evaporated. Trapped moisture causes rust spots under the coating.
  3. Apply a thin layer of oil. Pour a small amount of oil into the pan and rub it over every surface, including the handle and the outside. Then wipe it off with a clean towel until the pan looks almost dry. Too much oil leads to sticky, uneven patches.
  4. Heat the oven and set up. Preheat to 450°F to 500°F. Place the rimmed sheet or foil on the rack below the pan to catch drips.
  5. Bake upside down. Set the skillet upside down on the upper rack so the cooking surface faces down. Bake for one hour.
  6. Cool and repeat. Turn off the oven and let the pan cool inside. Repeat the oil-wipe-and-bake cycle two or three more times for a sturdier finish.

Choosing the Right Oil and Technique

Oil choice affects how hard the final layer becomes. Flaxseed oil polymerizes into a very hard coating, but it can flake if applied too thickly. Refined vegetable, canola and grapeseed oils are more forgiving for beginners. Whichever you use, the technique matters more than the brand: a thin, even film baked at high heat outperforms a thick coat baked at a lower temperature.

If you plan to season on a stovetop instead, the steps are similar, but you heat the oiled pan over medium until it smokes lightly, then let it cool. The oven method gives more even results across the whole surface.

Caring for the Seasoning After You Finish

Seasoning builds up with use. Cook fatty foods in the pan, avoid soaking it, and dry it on the stove after each wash. If the surface looks dull or gets a sticky film, you can repeat the oven steps. For a deeper look at maintenance routines, see How to Treat Cast Iron Skillet: Season, Clean and Store It Right and How to Wash and Season Cast Iron Skillet: A Step-by-Step Guide.

If your pan already has rust, clean that off before seasoning. Rust on Cast Iron Skillet: 6 Steps to Remove It and Re-Season walks through that process. For a pan that is badly neglected, Stripping Cast Iron Skillet: A Step-by-Step Guide to Bare Metal explains how to start from bare metal.

Common Mistakes

  • Applying too much oil, which leaves a sticky, gummy finish.
  • Skipping the drying step, which traps moisture and causes rust.
  • Baking at too low a temperature, which prevents the oil from fully polymerizing.
  • Forgetting the outside and handle, which can rust over time.
  • Storing the pan while it is still damp.

A flaxseed-based or high-smoke-point cooking oil helps you apply an even, thin layer. View on Amazon

A stiff nylon scrubber removes old residue without stripping good seasoning. View on Amazon

A rimmed baking sheet catches drips so your oven stays clean during the bake cycles. View on Amazon

FAQ

How many times should I season a cast iron skillet?

Three to four oil-and-bake cycles is a good starting point for a new or stripped pan. Your pan will keep improving with regular cooking, so you rarely need a full repeat after that.

Can I use olive oil to season cast iron?

You can, but extra virgin olive oil has a lower smoke point and can leave a sticky finish. Refined oils with higher smoke points tend to produce a harder, more even layer.

Why is my seasoned pan sticky?

Sticky spots usually mean too much oil was left on the surface. Bake the pan again at high heat after wiping off the excess thoroughly.

Conclusion

Seasoning a cast iron skillet is a simple process once you know the order of steps: clean, dry, oil thinly, then bake upside down at high heat. Repeat the cycle a few times to build a durable base. Regular cooking and proper drying after each wash will keep the surface improving for years.

Ready to choose one?

Emily Parker

About Emily Parker

Emily Parker is part of our editorial team and reviews and edits our cookware & knives guides, checking product details against manufacturer specifications and owner feedback.