Cast Iron, Stainless or Nonstick: Which Pan for This Dinner?

One question before you pull a pan down

Does this dinner need heat that stays, a sauce at the end, or a clean release? Each of the three pans is good at one of those and bad at the job the other two are for. The metal decides it: cast iron is about 97 to 98% iron with 2 to 3% carbon, cast thick. Fully clad stainless is three or more bonded layers, usually aluminum between steel. Nonstick is a PTFE coating over lightweight aluminum. The whole argument is in cast iron, stainless or nonstick and which one to cook dinner in.

• Heat that stays: cast iron. Its mass is the point: when a cold steak hits the pan, the surface temperature barely dips. In America's Test Kitchen's cast iron testing, skillets preheated to 500°F seared flank steak, and the heavy pans, 7 to 8 pounds, held heat best. Made In puts cast iron's safe baking ceiling as high as 900°F. See how to sear a steak in a cast iron pan.
• A sauce at the end: stainless. Steel grips protein, and what it grips is the fond, the browned layer that becomes a pan sauce. It answers the burner almost immediately and it doesn't react with tomato, vinegar or wine. See how to deglaze a pan and how to braise chicken thighs on a weeknight.
• A clean release: nonstick. Nothing sticks, so eggs slide out with barely any oil, and a sole fillet that would tear in anything else comes out whole. The same property means nothing browns onto the pan, so there's no fond.

Three dinners that go wrong

Eggs welded to stainless. A registered dietitian writing for the University of Maine Cooperative Extension gave up nonstick after Maine's ban. Her early tries at eggs on stainless mostly failed, and she ended up cooking eggs in seasoned cast iron. That's why the picker falls back to cast iron for eggs when you avoid nonstick.

No sauce after a good sear. Brown chicken in nonstick, add wine, and there is nothing to lift, because nothing stuck in the first place.

Metallic tomato sauce. Acid strips seasoning off cast iron and carbon steel during long simmers or bakes, ATK warns, and once the seasoning is gone iron leaches into the food and you taste it. A quick acidic pan sauce is fine. An hour of tomato is not. For a long braise in iron, an enameled pot is the answer: see enameled vs cast iron Dutch ovens.

Nonstick's limits are not fussiness

ATK caps nonstick at medium-high on the stove and 450°F in the oven, and says never to broil it. Above 500°F, it says, "the PTFE begins to break down and release toxic fumes. In humans, this can cause 'polymer fume fever' (flu-like symptoms), and the fumes are fatal to pet birds." It's also why you add the fat or the food before the pan heats: an empty nonstick pan on a hot burner spikes fast. What ruins it: metal utensils, abrasive sponges, lecithin cooking sprays and a hot pan plunged into cold water. ATK fries 50 oil-free eggs at the start and end of its testing to measure how far the coating has worn.

"PFOA-free" on a PTFE pan is not "PFAS-free". Consumer Reports tested three nonstick pans for 96 PFAS compounds and found measurable PFOA and other PFAS in one marketed as PFOA-free (the distributor disputed it). PTFE is itself a PFAS. Minnesota banned sales of cookware with intentionally added PFAS from January 1, 2025, and Colorado, Connecticut and Maine followed on January 1, 2026, per BCLP's state-by-state tracker. The EPA sets no cookware-specific limits. Ceramic nonstick is silica-based and takes more heat, but it's more brittle, and one 2026 roundup puts its useful nonstick life at one to three years.

Sizes and prices

Sizes matter more than brand. A 12-inch nonstick is the versatile one, enough for six servings; 10 inches serves two to four. For cast iron, ATK wants at least a 10-inch flat cooking surface so food isn't crowded, and sides at least 2 inches tall if you shallow fry. A 10-inch cast iron skillet runs about 5.4 pounds, roughly double a comparable stainless pan (Made In); ATK's 2026 nonstick review preferred 12-inch pans of 2.5 to 2.75 pounds.

Performance doesn't track price. In ATK's cast iron testing, updated June 2025, the Smithey No. 12 at about $200 won on its polished interior, but the Lodge 12-inch at roughly $35 to $44 was named Best Buy. In the 2026 nonstick review the winner was $180 and the Best Buy $45. ATK's cookware set testing found a set of clad stainless saved an average of 20% over single pieces. America's Test Kitchen also argues for a fourth, carbon steel: lighter than cast iron and nearly as good at searing, but sold unseasoned and stripped by acid the same way. Treat it as cast iron in the picker.

The pot that goes with them is a Dutch oven: our Dutch oven size calculator sizes one for your household.

Sources, as cited in Hungry Duck's pan guide (checked October 2026): America's Test Kitchen, the four core skillets, cast iron skillets, 12-inch nonstick skillets, cookware sets, best practices for cookware; Made In, cast iron vs stainless steel; University of Maine Cooperative Extension; Consumer Reports; BCLP, PFAS in cookware by state; EPA on PFAS.