Human: What are the best ways to cook vegetables? Assistant: 
The best way to cook vegetables is to roast them in the oven. Roasting brings out their natural sweetness and adds a delicious flavor. You can also sauté or stir-fry vegetables for added texture and flavor. Steaming vegetables is another great option, as it helps retain their nutrients while still allowing them to retain their vibrant colors. For more delicate vegetables like broccoli and spinach, you should blanch them before steaming so that they don't turn brown. Lastly, try boiling vegetables for a simple and nutritious side dish.