onion, quartered ad sliced into 1/2-inch thick
coarse sea salt
fresh black pepper
fresh rosemary, chopped
chopped fresh thyme
preheat oven to 450°F.
divide the potatoes and onions between two rimmed baking pans or a large rimmed baking sheet, sprinkle with oil and then salt and pepper, and toss to coat (i find it's easier to use your hands for this).
roast for 35 minute remove from oven, sprinkle with herbs, toss to coat (use a spatula now, they're hot.) return to the oven and roast until brown ad tender, about 20 minutes longer.