How to Reheat Deep Dish Pizza (2026): Oven, Skillet, and Air Fryer Methods

Preheat the oven to 350°F with a baking steel, a stone, or a heavy sheet pan on the middle rack; the preheated surface is what re-crisps the bottom crust, the part of a deep dish slice that suffers most in the fridge. Put the slice directly on the hot surface (or on a small piece of parchment if it is saucy on the bottom), tent it loosely with foil so the top does not dry out and the cheese does not brown before the center warms, and bake. For a single slice, 15 to 20 minutes; for two or three slices, 20 to 25; for a half pie in its original pan, 25 to 30. Remove the foil for the last 5 minutes to re-crisp the crust and let the cheese regain its sheen.

The check that matters is a probe thermometer in the center of the thickest part: it should read 165°F, the USDA reheating standard and also, not coincidentally, the point where the cheese is fully molten again. A slice at 140°F in the middle looks done from the outside and is not. If the edge is darkening before the center gets there, lower the oven to 325°F and add time; the crust is buttery enough to burn, and lower-and-longer always wins on deep dish. Chicago pizzerias that ship frozen pies give almost exactly this instruction: 350°F to 375°F, foil, 25 to 45 minutes depending on thickness, then uncovered to finish. Our main oven reheating guide covers why thin slices get a hotter, shorter treatment.

A heavy skillet, cast iron ideally, over medium-low heat. Put the slice in dry, let the bottom crisp for 2 minutes, then add a teaspoon of water to the pan away from the slice and cover with a lid. The water flashes to steam, the lid traps it, and the steam heats the filling from above while the pan heats the base from below. 10 to 12 minutes gets a refrigerator-cold slice to 165°F in the center; check with a probe, and if the bottom is browning faster than the center is warming, drop the heat and add 2 or 3 more minutes. Uncover for the last minute so the crust edge dries back out.

This is the method most Chicago natives use for a single slice, and it beats the oven on speed and energy for one or two pieces. It does not scale: three slices in a skillet crowd each other and the edges never crisp. It also needs a lid that actually fits; a sheet pan laid over the skillet works in a pinch. For a whole pie, the oven. Our stovetop reheating guide covers the dry-skillet version for thin slices, which is a different technique.

The air fryer is the community's favorite for thin slices and a qualified success for deep dish. Set it to 320°F, lower than the 350°F to 375°F used for thin crust, because the convection fan browns the top long before the center of a thick slice warms. Put the slice flat in the basket, 8 to 10 minutes, checking the center with a probe at 8. A loose foil tent over the top for the first 5 minutes helps on a very thick slice, if the basket has the clearance. Pull at 165°F.

The caveats: a deep dish slice from a 14-inch pie often does not fit flat in a compact basket, and a slice propped at an angle cooks unevenly; one slice at a time is the honest capacity; and the convection fan dries the exposed cheese faster than an oven does. It is the right tool for one slice when the oven is not worth heating, and the wrong one for a half pie. Our air fryer reheating guide has the thin-crust settings and the basket-size realities.

Microwave. On its own, the microwave heats the filling and turns the crust into a damp sponge; the buttery, layered deep dish crust suffers more than a thin one does. The one legitimate use is a 60-second head start on a very cold, very thick slice before it goes into the skillet or oven, which cuts 5 minutes off the total and does not hurt the crust because the skillet or oven re-crisps it afterward. If the microwave has to be the whole method, 50% power in 60-second bursts with a cup of water alongside, and accept the texture; our microwave guide explains the water trick.

From frozen. Thaw in the refrigerator overnight and reheat as above. Straight from frozen, a slice needs roughly double the oven time at 350°F with the foil on the whole way until the last 5 minutes, and the probe check is non-negotiable; a frozen center can read 100°F while the outside looks finished. Pizzerias that ship frozen pies call for 40 to 45 minutes for a whole pie this way.

Detroit and Sicilian slices are thick but not filled: a 1-inch focaccia-style crust with cheese to the edges. They take the oven method at 375°F for 10 to 12 minutes uncovered on a preheated steel or stone, which re-crisps the caramelized cheese edge that defines the style, or the skillet method for 6 to 8 minutes. They do not need the foil tent. A slice of stuffed pizza, the double-crust Chicago variant, is thicker than deep dish and takes the top end of every time above.