Air Fryer Reference
Reheat Donuts in an Air Fryer
Reheat · leftover
- Temperature
- 300 °F
- 149 °C
- Total time
- 2 min
- Flipping
- Not needed
- Serving
- 2–4 leftover donuts in a single layer with ½-inch gaps between them. Line the basket with a square of parchment paper — the glaze will drip slightly and parchment makes cleanup a 30-second lift-and-toss rather than scrubbing burnt sugar off the grate.
- leftover
Doneness
The glaze looks glossy and lightly amber, not matte or faded (under-done) and not pooling or dripping (over-done). The dough feels softly warm to the touch, not firm or cool. At 90 seconds, if the donut still feels cool and the glaze looks dull, run the final 30 seconds; past 2 minutes the dough begins to dry out. For chocolate-frosted donuts, the frosting softens slightly at 300 °F but will not run.
Technique
Place donuts on the parchment-lined basket in a single layer, glaze-side up, with gaps between them. Do not preheat; a cold-start at 300 °F (149 °C) is essential because a hot basket scorches the glaze in under a minute. Skip oil spray entirely — the dough retains oil from the original fry. Set 300 °F for 2 minutes. Do not flip; the glazed top is fragile and flipping tears it. The moment the timer beeps, transfer donuts to a serving plate. Do not let them sit in the warm basket — residual heat turns the glaze runny within 30 seconds.
Watch out for
- Use 300 °F (149 °C), not 350 °F. The higher temperature melts the glaze into a runny puddle within 90 seconds — it drips off the donut and caramelizes to a bitter, burnt residue on the basket floor. The lower temp gives the convection air time to warm the dough gently and restore the glaze shine without scorching it.
- Two minutes total is the limit. Leftover donut dough has already lost moisture from the original fry plus storage; cooking past 2 minutes dries it irreversibly to a tough, dense texture. For larger servings, run sequential 2-minute batches rather than extending a single batch.
- No oil spray. The dough retains fry oil from the original cook and does not need more. Added oil pools at the basket floor and causes smoke and spatter at 300 °F.
- Use a parchment liner. Even at the correct temperature, roughly 1–2 g of glaze per donut will soften and drip. Without parchment, that sugar bakes onto the grate and basket floor and requires soaking and scrubbing to remove.
- Do not microwave leftover donuts. Microwave heat liquefies the glaze within 8 seconds into a runny puddle and turns the yeasted dough rubbery within 15 seconds.