Roasting chestnuts is a timeless tradition, evoking warm memories of cozy winter evenings, bustling holiday markets, and the comforting aroma that fills the kitchen. While traditionally roasted over open fires or baked in ovens, air fryers have revolutionized this process, making it faster, cleaner, and surprisingly precise. Air fryers use rapid air circulation to cook food evenly, giving chestnuts a perfectly roasted exterior while keeping the nutmeat inside tender and sweet. The process is simple yet delicate, as chestnuts have a unique structure: a hard outer shell, a thin inner skin, and a soft starchy core. Mastering the technique requires understanding temperature, timing, and subtle cues that indicate readiness.
Temperature control is crucial when roasting chestnuts in an air fryer. Too low, and the chestnuts will remain undercooked and chewy; too high, and they risk burning while the interior stays raw. Most culinary experts recommend a temperature range of 375°F to 400°F (190°C to 205°C).
Maintaining the right temperature ensures the chestnuts crack open naturally, releasing steam and preventing sogginess. Air fryers are excellent at maintaining a steady heat, which is why they are a preferred method over stovetops or ovens for this process.

The roasting time depends on both the chestnut size and the selected temperature:
It is crucial to shake or stir the chestnuts halfway through to promote even cooking. Unlike ovens, air fryers circulate hot air around each chestnut, so uneven placement can lead to some chestnuts being perfectly roasted while others remain undercooked.
Chestnuts are deceptively tricky to judge by appearance alone. Here are reliable indicators of doneness:
Roasting chestnuts is wonderfully simple, requiring minimal ingredients:
Tip: Fresh chestnuts are essential; old or dried chestnuts often result in a mealy texture and poor flavor. Look for glossy shells and firm nuts that feel heavy for their size.
Follow this step-by-step process for perfect air-fried chestnuts:
Maintaining the recommended temperature range is critical for balancing sweetness, tenderness, and shell crispness.
Always monitor closely in the final minutes, as chestnuts can transition from perfect to overdone quickly.
Even with careful preparation, chestnut roasting can sometimes go awry:
Most issues can be prevented with proper scoring, spacing, and monitoring during cooking.
Before roasting chestnuts in an air fryer, rinse them under cold water and pat them dry. Use a sharp knife to score an ’X’ on the flat side of each chestnut. This prevents them from exploding during cooking and makes them easier to peel once roasted.
The optimal temperature for roasting chestnuts in an air fryer is around 375°F (190°C). This temperature allows the chestnuts to cook evenly while developing a slightly crispy exterior and tender interior.
Roasting chestnuts in an air fryer typically takes 15 to 20 minutes. Cooking time may vary depending on the size of the chestnuts and the model of your air fryer. It’s recommended to shake the basket or stir the chestnuts halfway through to ensure even roasting.
Soaking chestnuts is optional but can help make peeling easier. If desired, soak them in water for 30 minutes before scoring and roasting. However, chestnuts can also be roasted directly after scoring without soaking.
Fully roasted chestnuts will have a split skin along the scored ’X’, and the nut inside should be soft and tender. The shell may become slightly charred in spots, and the nut should easily separate from the shell when peeled.
Yes, frozen chestnuts can be roasted in an air fryer, but they should be thawed and scored before cooking. Thawing ensures even roasting and prevents the outside from burning while the inside remains undercooked.
Roasted chestnuts are best eaten fresh but can be stored in an airtight container in the refrigerator for up to 3 days. For longer storage, freeze peeled roasted chestnuts for up to 2 months. Reheat in the air fryer at 350°F (175°C) for a few minutes before serving.