Roasted Spiced Sweet Potatoes

Makes 4 to 6 servings.

1 teaspoon coriander seeds
1/2 teaspoon fennel seeds
1/2 teaspoon dried oregano
1/4 - 1/2 teaspoon dried hot red pepper flakes (the latter will make them quite spicy)
1 teaspoon kosher salt
2 pounds medium sweet potatoes
3 tablespoons vegetable oil

Preheat oven to 425°F. Coarsely grind coriander, fennel, oregano, and red pepper flakes in an electric coffee/spice grinder or with a mortar and pestle. Stir together spices and salt.

Cut potatoes lengthwise into 1-inch wedges. Toss wedges with oil and spices in a large roasting pan and roast in middle of oven 20 minutes. Turn wedges over with a spatula and roast until tender and slightly golden, 15 to 20 minutes more.