How to Season a Cast Iron Cooktop Griddle | Oven Method That Works

A new cast iron griddle arrives coated in industrial wax and oil meant to prevent rust in transit, not to cook on. The oven method builds a slick, dark polymerized layer that turns that $50 griddle into a release-everything cooking surface for years.

Why the Oven Method Beats Stovetop Seasoning

Stovetop seasoning on a cooktop griddle never gets hot enough to fully polymerize oil, leaving sticky patches that attract carbon. Only removable griddles get the oven treatment — integrated stove-top plates stay on the range and use the burner method instead. If you are still shopping for the right one, our roundup of the best cooktop griddles covers models that fit the oven seasoning process.

Which Oil Creates the Best Seasoning Layer

High-smoke-point oils are the only ones that form a hard, glossy seasoning instead of turning gummy. Canola and vegetable oils are more forgiving and more accessible for routine reseasoning. Crisco shortening works well too.

The Step-by-Step Seasoning Process

Step 1: Strip Factory Grease

Wash the griddle with warm soapy water and steel wool until the surface is bare grey metal. The factory coating feels waxy — you want to reveal raw iron. Rinse thoroughly and dry immediately with a lint-free cloth to prevent flash rust formation.

Step 2: Preheat for Pore Opening

Skip this step and the oil sits on top rather than bonding into the metal.

Step 3: Apply Oil Thinly

Remove the warm griddle and apply oil with a lint-free rag. Then wipe it all off with an absorbent paper towel until the surface feels slick but not greasy. Apply to the inside, outside, and sides. Too much oil is the single most common mistake — excess oil pools during baking and produces a sticky, uneven finish.

Step 4: Bake Upside Down

Place the griddle upside down on the center oven rack. Put a sheet of foil on the bottom rack to catch drips. Bake at 450–500°F for one hour. Baking upside down prevents oil from pooling in the cooking surface.

Step 5: Cool Slowly

Turn off the oven and let the griddle cool completely inside without opening the door. Once cool, the surface should be dark and glossy, not sticky.

Step 6: Repeat Three to Four Times

Repeat steps 3 through 5 three to four times total.

Common Seasoning Mistakes and Fixes

Applying too much oil leaves sticky seasoning that gunks up your first few cooks — wipe the surface dry one more time than you think necessary. Placing the griddle flat instead of upside down leads to oil pooling in the center.

Seasoning produces significant smoke at 450–500°F. Open windows and run ventilation fans. Verify the griddle fits on the center rack upside down without touching the oven door or top heating element.