Spiced Sweet Potato Gratin

1. 1

   Preheat oven to 350F.

2. 2

   Cook sweet potatoes in large pot of boiling salted water until just tender, about 20 minutes (do not overcook).

3. 3

   Drain well and cool.

4. 4

   Peel sweet potatoes; cut into 1/4-inch-thick slices.

5. 5

   Mix curry powder, cumin, cinnamon, ginger, and salt in small bowl to blend.

6. 6

   Completely line bottom of 9-inch-diameter springform pan with sweet potato slices, filling in any spaces with cut-up sweet potato slices.

7. 7

   Press down lightly.

8. 8

   Spread 1/2 cup sour cream over sweet potatoes.

9. 9

   Sprinkle 1 tablespoon spice mixture over sour cream.

10. 10

    Sprinkle with 1 cup cheese.

11. 11

    Repeat twice with remaining sweet potatoes, sour cream, spice mixture, and cheese.

12. 12

    Place pan on rimmed baking sheet; bake until cheese is melted and sweet potatoes are heated through, about 40 minutes.

13. 13

    DO AHEAD Can be made 8 hours ahead.

14. 14

    Cover and chill.

15. 15

    If desired, reheat in 400F oven until hot, about 15 minutes.

16. 16

    Remove pan sides from gratin; cut into wedges.

17. 17

    Serve gratin warm or at room temperature.

* Per serving · 4 servings · Values may vary.