Thoroughly wash fresh green beans with cold running water.
Add green beans to boiling water for 1 minute and immediately submerge boiled green beans in ice-cold water to cool down.
Once the blanched green beans have cooled down, pat dry with paper towels and transfer to a plate.
Drizzle with olive oil and coat the blanched green beans.
Season blanched green beans with garlic, cayenne powder (if using), salt, and ground black pepper.
Add softened butter and lather each seasoned green bean using kitchen tongs.
Gently transfer seasoned green beans onto the Air Fryer tray and slowly insert the tray into the middle cooking chamber, near the rotisserie catch , if using an Air Fryer Oven.
If using an Air Fryer basket, simply place the seasoned green beans in the inner basket.
Air fry green beans for 8 minutes or until crisp tender, turning once halfway through. Add 1 to 2 minutes if softer green beans are preferred.
Notes
Use quality ingredients from the green beans, to unsalted butter, and the seasonings.
Remove spoiled green beans and discard those with dark spots.
The recipe uses minimal salt. Add 1/4 teaspoon salt if saltier green beans are preferred.