1Heat oven to 450°F. Line 2 large cookie sheets with foil; spray foil with cooking spray.
2In large bowl, stir together oil, mustard seed, rosemary and 1 tablespoon of the salt. Add potato wedges; toss to coat. Spread potatoes in single layer on cookie sheets.
3Bake 45 minutes, turning once, until potatoes are golden brown and tender. Sprinkle with remaining 1 tablespoon salt.