Step 1

Preheat oven to 450º. Cover a rimmed baking sheet with foil.

Step 2

In a medium bowl, toss the potatoes with olive oil and 1 teaspoon salt.

Step 3

Sprinkle rosemary and thyme on the bottom of baking sheet, spread the onion slices over the herbs, and top with potatoes cut side down. Scrape any olive oil remaining in the bowl over the potatoes.

Step 4

Roast until the potatoes are tender and brown on the edges, 30-35 minutes. transfer the potatoes and onions to a bowl and toss with the remaining herbs. Season to taste with sea salt.