Mashed Potato and Turnip Gratin

1. 1

   Butter 11x7x2-inch glass or ceramic baking dish.

2. 2

   Cook potatoes and turnips in heavy large pot of boiling salted water until tender, about 35 minutes.

3. 3

   Drain.

4. 4

   Cool vegetables slightly and peel.

5. 5

   Cut into large chunks; place in food processor.

6. 6

   Add butter and process until smooth, scraping down sides of bowl occasionally.

7. 7

   Add 1/4 cup cheese and pinch of ground nutmeg; blend briefly.

8. 8

   Season puree to taste with salt and pepper.

9. 9

   Spoon into prepared dish.

10. 10

    Sprinkle with remaining 1/4 cup cheese.

11. 11

    (Gratin can be prepared 1 day ahead.

12. 12

    Cover and chill.)

13. 13

    Preheat oven to 425F.

14. 14

    Bake gratin uncovered until vegetables are hot and top is golden, about 25 minutes.

* Per serving · 4 servings · Values may vary.