CrispCalc

Air fryer preset

Air Fryer Brussels sprouts: Perfect Time & Temperature

Charred leaves, creamy hearts. The calculator below is pre-filled with the oven recipe most cooks start from — tweak anything and the air fryer settings update live.

Temperature
380°F
Total time
15 min
Check at
11 min
Yields
Serves 3 as a side
380°15min
Check at 11 min. Shake or flip then, and add time if needed.

How to cook it

What actually makes it work.

The restaurant Brussels sprouts you've had — the ones with papery, burnt leaves and a buttery interior — are doing two things a home oven can't easily: hitting a very hot, very dry surface and cooking fast enough that the inside stays creamy. The air fryer does both without much effort. Start from a 400°F / 20-minute oven recipe and the calculator pulls the temp back just enough to keep the outside from turning to ash.

  1. 01

    Halve them, cut-side down.

    The cut face is where the char happens. Halve each sprout through the stem, toss with oil, and arrange cut-side down for the first two-thirds of the cook. A loose leaf or two will fall off — that's fine, they turn into chips.

  2. 02

    One tablespoon of oil per pound.

    Less than that and they dry out; more than that and they steam. Neutral oil, olive oil, or rendered bacon fat all work. Toss thoroughly so every cut surface has a thin sheen.

  3. 03

    Shake at the check mark.

    At the check time, shake hard. The sprouts rotate, some loose leaves come free and crisp separately, and the ones that were already charred move out of the hot spots.

  4. 04

    Finish with acid.

    Sprouts take to acid the way potatoes take to salt. A squeeze of lemon, a drizzle of balsamic, or a splash of sherry vinegar after cooking turns them from side dish into something you want seconds of.

Variations

By size and style

VariantTemperatureTimeNotes
Fresh, halved380°F15 minStandard — shake at 10.
Quartered large sprouts380°F13 minMore surface = faster char.
With bacon or pancetta375°F18 minRender fat first, then add sprouts.
Shaved / shredded380°F7 minCloser to hash browns than sprouts.

FAQ

Questions cooks actually ask.

Fresh or frozen?
Fresh, almost always. Frozen sprouts release water as they thaw and end up steamed instead of charred. If you only have frozen, cook them 2 extra minutes at 400°F and accept that the char will be less dramatic.
How much oil is too much?
Anything over 2 tablespoons per pound is too much. Excess oil pools at the bottom of the basket, smokes at air fryer temperatures, and coats the sprouts in a way that blocks browning.
Why are my leaves burning but the sprouts are raw inside?
Your fryer is running hot — try 370°F instead of 400°F — or the sprouts are too big. Halve any that are larger than a ping-pong ball.
When do I add balsamic or honey?
In the last two minutes, not before. Sugar-heavy glazes burn at air fryer temperatures. Toss cooked sprouts with the glaze on a plate or finish in a skillet for 30 seconds if you want real glazing.
Can I cook them whole?
You can, but the outside leaves burn before the heart cooks through. If you need to cook them whole for a presentation, drop the temp to 360°F and go for 20 minutes, shaking twice.
How do I reheat leftovers?
The air fryer, again, is your friend. Four minutes at 380°F brings back the crisp. Microwaves turn them sad and green.

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Last updated . Cooking times are guidance — taste and a thermometer win.