This wonderful recipe for cardamon-roasted cauliflower is courtesy of Suvir Saran and can be found in "American Masala."
Preheat oven to 425 degrees. Brush a 9-by-13-inch baking dish or other large gratin dish with olive oil and set aside.
In a coffee grinder or small food processor, grind together cardamom pods, chiles, coriander, cumin, and whole peppercorns until fine. Mix the spices with oil in a large bowl. Add cauliflower and onion; toss to coat.
Transfer vegetables to prepared baking dish and roast until tender, about 1 hour, stirring every 20 minutes. Season with salt and serve immediately.