Roasted sweet potatoes are flavored with thyme, garlic and red pepper.
Preheat oven to 400 degrees. In a medium bowl, toss the sweet-potato rounds with olive oil, thyme, garlic, red pepper, and salt.
Transfer to a rimmed baking sheet, garnish with thyme sprigs, and place in oven. Roast until tender and starting to brown, 40 to 45 minutes. Transfer to a platter, and serve.