2 tablespoons olive oil
2 teaspoons salt
1 teaspoon ground cumin
1 teaspoon chile powder
1 teaspoon paprika
1 teaspoon freshly ground black pepper
1/2 teaspoon cayenne, or to taste
Chili-Cilantro Sour Cream:
1 cup sour cream
1 tablespoon freshly squeezed lime juice
2 teaspoons sweet chili sauce
1 small garlic clove, minced
1/2 teaspoon salt
1/2 teaspoon freshly ground black pepper
1 heaping tablespoon chopped cilantro
Preheat oven to 425 F. Toss sweet potatoes and olive oil in a large bowl. Combine salt, cumin, chile powder, paprika, pepper and cayenne in a small bowl. Add spices to potatoes and toss to coat. Arrange potatoes in one layer on baking sheet. Bake in oven on lowest rack until undersides are browned, 12-15 minutes. Turn potatoes with a spatula and bake 10 more minutes. Remove from oven and serve with Chili-Cilantro Sour Cream.
To Make The Chili-Cilantro Sour Cream: Combine all the ingredients except the cilantro in a medium bowl and whisk together. Stir in cilantro.