Don't overcrowd the basket: Cook in batches if necessary to ensure proper air circulation.Shake the basket: Halfway through cooking, give the basket a good shake to promote even cooking.Adjust cooking times: Different vegetables may require slightly different cooking times. Start with less time and add more as needed.Experiment with temperatures: While 400°F is a good starting point, you may find that certain vegetables cook better at slightly lower or higher temperatures.Use minimal oil: A light coating or spray of oil can help achieve a crispier texture, but it's not always necessary.