Instructions: For Streusel: Place all ingredients in processor in order listed. Using on/off turns, blend until small moist clumps form. Transfer to bowl. Cover and refrigerate at least 1 hour. (Can be made 2 days ahead. Keep refrigerated.)

For Sweet-Potato Puree: Preheat oven to 375 degrees. Pierce potatoes in several places with fork. Place directly on oven rack and bake until very tender, about 1 hour. Transfer to rack and cool.

Peel potatoes; place flesh in large bowl and mash. Mix in orange juice, sugar, butter, and orange peel. Season with salt and pepper. Butter 13- by 9-inch oval gratin dish. Spread puree in dish; smooth top. (Puree can be made 1 day ahead. Cover and chill.)

Preheat oven to 400 degrees. Scatter streusel over potatoes. Bake until puree is hot and streusel is crisp, about 40 minutes. Cool 5 minutes, then serve.

This recipe yields 8 servings.

Comments: The crunchy crumb topping contrasts nicely with the orange-scented sweet-potato puree. Sweet paprika adds a touch of heat.

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