- 1/3 cup all purpose flour
- 1/3 cup whole unblanched almonds
- 3 tablespoons (packed) golden brown sugar
- 2 teaspoons Hungarian sweet paprika
- 1/4 cup (1/2 stick) chilled butter, cut into pieces
- 4 pounds red-skinned sweet potatoes (yams)
- 1/3 cup fresh orange juice
- 2 tablespoons (packed) golden brown sugar
- 2 tablespoons (1/4 stick) butter, room temperature
- 1 1/2 teaspoons grated orange peel
- 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.)
- Preheat oven to 375°F. 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 13×9-inch oval gratin dish. Spread puree in dish; smooth top. (Puree can be made 1 day ahead. Cover and chill.)
- Preheat oven to 400°F. Scatter streusel over potatoes. Bake until puree is hot and streusel is crisp, about 40 minutes. Cool 5 minutes, then serve.