Spiced Sweet Potato Gratin

Ingredients

• 3 cups shredded extra-sharp white cheddar
• 1 tablespoon curry powder
• 1 ½ cups sour cream
• 1 tablespoon ground cumin
• ½ teaspoon salt
• ¾ teaspoon ground ginger
• ¾ teaspoon ground cinnamon
• + 1 more ingredients
• • 4 pounds red-skinned sweet potatoes (yams)

Preheat oven to 350°F. Cook sweet potatoes in large pot of boiling salted water until just tender, about 20 minutes (do not overcook). Drain well and cool. Peel sweet potatoes; cut into 1/4-inch-thick slices. Mix curry powder, cumin, cinnamon, ginger, and salt in small bowl to blend. Completely l...

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