3 1/2 pounds slender garnet yams or other yams (red-skinned sweet potatoes; about 2 1/2 inches in diameter) |
1/4 cup blis maple syrup or other pure maple syrup |
1/4 cup (1/2 stick) unsalted butter |
1 tablespoon apple cider vinegar |
1 teaspoon coarse kosher salt |
3/4 teaspoon freshly ground black pepper |
1 cup all purpose flour |
1/2 cup maple sugar* (scant 3 ounces) |
1/3 cup (packed) golden brown sugar |
3/4 teaspoon ground cinnamon |
6 tablespoons (3/4 stick) unsalted butter, melted |