The Best Large Roaster Ovens

The thing that trips people up on this page: an 18-quart roaster takes a 22-pound bird and a 22-quart roaster takes 26 to 28 pounds. Those are not proportional, because the limiting dimension is not volume — it is the height between the cookwell floor and the underside of the lid, with the rack in place.

Two 22-quart roasters with different bird ratings is the clearest possible demonstration that the quart number is not the spec to buy on. Buy on the pound rating, and treat it as a ceiling rather than a target — the full chart by bird weight is in what size roaster oven do I need.

A rated capacity assumes a bird of average shape. Yours might not be. Three checks, all of which take less time than a return:

• Height with the rack in. The rack lifts the bird an inch or two off the floor of the cookwell, and that is the inch or two you lose. A bird that touches the lid will steam against it and the skin on the crown will never crisp.
• Counter space, with clearance. A roaster vents heat and steam. It needs clear space around it and nothing directly above it — not under a wall cupboard.
• Where it lives in February. This is the question that decides whether the appliance gets used again. A 22-quart roaster is roughly the size of a large microwave. If there is no shelf for it, the 18-quart is a better buy than a 22-quart you resent.

And the circuit. These are 1,400 to 1,500 watt appliances. One on its own is fine on a normal household outlet; a roaster plus a kettle plus a warming tray on the same kitchen circuit is how the breaker goes at four o’clock.

For a table of twenty or more there is a real case for two appliances rather than one large one, and it is not the case people expect.

A single 22-quart roaster cooking a 26-pound bird is doing one job for four to five hours and is unavailable for anything else. Two 18-quart roasters cooking two 13-pound birds finish sooner — a smaller bird cooks faster and carves faster — and the moment the first one is out, that roaster becomes a holding oven for the sides. You also get two sets of drippings, which is more gravy than one big bird gives you.

The arguments the other way are presentation and storage. One large roast bird on a platter is the picture people have in their heads, and two roasters is two appliances to store and two outlets to find. If the table expects a whole bird carried in whole, buy the big one.

Either way, the capacity you need starts from the number of people, not the appliance: how much turkey per person is the right first calculation, and it often shows that the 28-pound bird was never necessary.

A large roaster is not only a turkey appliance, and the capacity earns its keep on the days there is no turkey in it.

A ham. Twenty-two quarts takes a large bone-in ham comfortably, and Nesco puts a precooked ham at 325F for 15 to 20 minutes per pound to an internal 160F. We cover it in roaster ovens for a ham.

A prime rib. A 6 to 8 pound rib roast is well inside any of these, and Nesco’s own instruction for the 18 quart is 325F at 13 to 15 minutes per pound. See prime rib in a roaster oven.

Volume sides. Mashed potatoes for twenty, baked beans, chili, a big batch of dressing. This is the use that makes a roaster a year-round appliance rather than a November one.

Holding. The lowest setting on a large roaster will hold several dishes above the 140F line while the oven is doing something else — the single most useful thing a second appliance does on the day.

What it does not do well: anything that needs a dry crust. A roaster is a covered, humid box. Roast potatoes and anything breaded belong in the oven. That boundary is drawn properly in roaster oven vs oven.

Two accessories change the experience of owning a large roaster, and a third is optional.

A rack with detachable handles. Getting a 26-pound bird out of a deep cookwell is the hardest physical moment of the day. A rack that lifts out with handles turns it into a two-handed lift instead of an improvisation with tea towels.

Liners. A roaster cookwell full of baked-on drippings is the worst washing-up of the holiday. A liner turns it into lifting a bag out. They are not essential and they are genuinely useful.

A leave-in thermometer. A roaster has no window and every lid-off check costs you heat. A probe that reads from outside means you never guess. The options are in best meat thermometers, and the whole accessory list is in roaster oven accessories.