Short Answer:

To make Brussels sprouts crispy on the outside, trim and halve them, then toss lightly with oil. Spread them in a single layer in the air fryer basket to allow proper air circulation.

Cook at 190–200°C (375–400°F) for 12–15 minutes, shaking the basket halfway through. This results in golden, caramelized edges while keeping the inside tender and flavorful.

Detailed Explanation:

Making Brussels Sprouts Crispy on the Outside

Achieving crispy Brussels sprouts in an air fryer depends on preparation and cooking technique. Begin by washing the sprouts thoroughly and trimming the stems. Cut each sprout in half to ensure even cooking and more surface area for crisping. Removing any damaged outer leaves also helps the sprouts crisp up evenly and prevents burning.

Coating and Seasoning
Lightly coat the halved Brussels sprouts with oil. The oil promotes browning and a crunchy exterior while preventing the florets from drying out. Use just enough to coat evenly, avoiding excess that may cause sogginess. Season with salt, pepper, garlic powder, paprika, or other desired herbs. Seasoning enhances flavor and pairs well with the crispy texture.

Air Fryer Arrangement
Place the Brussels sprouts in a single layer in the air fryer basket. Overcrowding restricts hot air circulation, which reduces crispiness and can lead to uneven cooking. For larger batches, cook in multiple rounds to maintain proper airflow and achieve a uniform golden exterior. Preheating the air fryer for a few minutes ensures even cooking and consistent results.

Cooking Temperature and Time
Set the air fryer to 190–200°C (375–400°F) and cook for 12–15 minutes. The high heat helps caramelize the outer leaves, creating crispy edges while keeping the inside tender. Shake or toss the basket halfway through to expose all sides of the sprouts to the circulating hot air. Monitoring in the last few minutes prevents burning and allows you to achieve the desired level of crispiness.

Tips for Extra Crispiness
For even crispier Brussels sprouts, consider adding a light dusting of breadcrumbs or cornstarch before cooking. This creates a crunchy coating that enhances texture. Avoid wet marinades during cooking, as they can create steam and reduce crispiness. Adding delicate seasonings or sauces after cooking helps maintain the crunch while enhancing flavor.

Conclusion

Making Brussels sprouts crispy on the outside involves proper trimming, halving, light oil coating, and seasoning. Cooking at 190–200°C for 12–15 minutes in a single layer ensures caramelized, golden edges with a tender interior. Shaking the basket halfway through and avoiding overcrowding promotes even crispiness. By following these steps, Brussels sprouts can be deliciously crispy, flavorful, and perfect as a healthy side dish or snack.