I don't have a specific recipe for them, but roasted vegetable basics for me is:
* cut into similar sizes (separate into two piles if vegetables are of different cooking densities, so that for example tomatoes can be added half way)
* toss well in olive oil, minced garlic optional, season salt and pepper
* optional use of spices (some herbs) that do not burn easily (I don't add anything to my cauliflower, not even garlic.)
* spread on cookie sheet or roasting pan, single layer
* oven set to broil, start at 400 and adjust +/- next time you roast again
* place in top rack, or according to your oven (veggies are 4-6 inches from heat source)
* leave oven door half way open, keep a constant eye on them to ensure they don't burn, toss/turn/stir once or twice
* they're done when you say they're done
I like to finish my cauliflower with chives and a drizzle of very sharp vinegar. I'd be interested in anyone posting a slow roast method for them.