- 3 pounds 1 1/2-inch-diameter red-skinned potatoes, halved
- 2 tablespoons vegetable oil
- 2/3 cup finely grated fresh horseradish
- 1/2 cup coarse Pommery seed mustard
- 1/4 cup (1/2 stick) butter, melted
- Preheat oven to 400°F. Brush 2 large baking sheets with oil. Toss potatoes with 2 tablespoons oil in large bowl. Season with salt and pepper. Spread potatoes on sheets in single layer. Roast until almost tender, about 30 minutes.
- Meanwhile, combine horseradish, mustard and butter in bowl. Spoon half of mixture over potatoes; toss well. Roast potatoes 15 minutes. Toss potatoes with remaining mustard mixture. Roast until very tender, tossing occasionally, about 10 minutes. Transfer to bowl and serve.