How long to cook kohlrabi in an air fryer

At-a-glance cooking parameters

Temperature

400 °F

204 °C

Total time

18 min

per single layer

Shake at

9 min

shake once

Internal temp

—

use visual cue

Kohlrabi cooks in the air fryer in about 18 minutes at 400 °F (204 °C), shaken once at the halfway mark, until the fries or cubes are tender inside with golden, crisp edges. This pale green bulb — a member of the cabbage family with a mild, slightly sweet turnip-meets-broccoli-stem flavour — makes a light, lower-carb stand-in for potato fries. Peel deep to remove both the tough skin and the woody layer beneath it, cut even fries or cubes, and toss with a little oil so the edges crisp; shake halfway for all-around browning and pull it while it still holds its shape rather than cooking it to mush. Unlike Rutabaga (a denser, sweeter, larger root that needs the full longer roast — kohlrabi is milder, lighter, and cooks a touch faster), Turnips (its peppery cousin), or Cabbage Wedges (the same family cooked as soft charred wedges), kohlrabi crisps into a clean, mild low-carb fry. 4 ways to make it: garlic-Parmesan, Cajun, ranch, and lemon-herb.

Per serving

Approximate values for a single portion of kohlrabi (USDA baseline, cooked, includes light air-fryer oil spray).

Calories

60 kcal

Protein

2 g

Fat

2 g

Carbs

9 g

Kohlrabi in popular air fryer brands

Adjusted for how each brand actually heats. Tap a brand name to see every food we calibrate for it.

How to tell it’s done

Done when the fries or cubes are tender through the middle with golden, crisp edges. Shake the basket at the halfway mark so they brown on all sides. Pull them while they still hold their shape — kohlrabi turns mushy if you push it well past tender. No internal temperature to hit; go by tenderness and colour.

Step-by-step method

1. 1

   Prep

   Bring ingredients close to room temperature. Yes — toss the pieces with a little oil so the edges crisp and brown rather than drying out in the dry heat.

2. 2

   Season

   Season with Garlic-Parmesan: olive oil, garlic, and grated Parmesan tossed on in the last few minutes., Cajun: a Cajun or chili spice blend for spiced kohlrabi fries., Ranch: dry ranch seasoning for a tangy, herby low-carb fry., Lemon-herb: olive oil, lemon zest, thyme or dill, salt, and pepper..

3. 3

   Load

   Arrange one large or two small bulbs (~3–4 cups cut), in a single layer; serves 2–3 as a side for best convection airflow.

4. 4

   Cook

   Set the air fryer to 400 °F (204 °C) and cook for 18 minutes total, shaking once at 9 minutes.

5. 5

   Check & rest

   Check the visual doneness cue and serve immediately for best texture.

6. 6

   Store

   Refrigerate cooked kohlrabi airtight up to 3–4 days and re-crisp at 400 °F (204 °C) for 3–4 minutes. Raw peeled kohlrabi keeps cut and submerged in water in the fridge for a couple of days.

Watch out for

• !Peel deep — kohlrabi has a tough fibrous skin and a woody layer just beneath it; take both off down to the pale, tender flesh or the pieces stay stringy.
• !Cut into uniform fries or cubes so they cook at the same rate; uneven pieces leave some hard while others overcook.
• !Keep the pieces in a single layer and shake the basket halfway; crowding steams them instead of crisping the edges.
• !Use a light toss of oil — too little and the edges dry out, too much and they go soggy.
• !Don't overcook to mush — kohlrabi is best pulled while it's tender but still holding its shape.

FAQ about kohlrabi in an air fryer

What temperature should I cook kohlrabi at in an air fryer?

Cook kohlrabi at 400 °F (204 °C). The convection air at this temperature browns the exterior quickly without drying the centre.

How long does kohlrabi take in an air fryer?

Kohlrabi takes 18 minutes total at 400 °F (204 °C). Shake the basket once at 9 minutes so both sides cook evenly.

Do you need to shake kohlrabi in an air fryer?

Yes — shake the basket once at 9 minutes. Loose pieces (kohlrabi) settle into the basket and the bottom layer stays pale unless you redistribute them halfway through.

Do you need to preheat the air fryer for kohlrabi?

Preheating is optional for kohlrabi — most modern air fryers reach temperature in under 2 minutes and the food's total cook time already accounts for the ramp-up. If you do preheat, reduce the total time by 1–2 minutes and check earlier than usual.