Tossing leafy vegetables such as spinach, lettuce, or kale in an air fryer can seem like a good idea for a quick sauté. The reality? Your veggies will spin around like they're in a tornado, resulting in burnt spots and a dry, unappetizing texture. Instead, lightly wilt your veggies in a pan with some olive oil and garlic, or blanch them in salted water for no more than two minutes.