Roasted Sweet Potatoes with Garlic and Parmesan November 2, 2024 by admin ADVERTISEMENT Sprinkle the grated Parmesan cheese over the sweet potatoes. Roast: Roast in the preheated oven for 25-30 minutes, or until the sweet potatoes are tender and golden brown. Garnish and Serve: Garnish with fresh thyme or parsley. ADVERTISEMENT ←PreviousNext→