Brush the tender sweet potato skins with a little olive oil and sprinkle with the cheese … Add cheese directly to the Mashed Sweet Potatoes. Mashed Sweet Potatoes with a Cinnamon Nut Topping: Chopped … Meanwhile, mix together 2 tbsp grated parmesan cheese, 4 chopped sage leaves (optional), 1/4 tsp garlic powder and 1/2 tsp smoked paprika in a small bowl. For Browned Butter Mashed Sweet Potatoes… After the sweet potatoes have finished boiling, cut them into cubes and place them in a large casserole dish. Mash the sweet potatoes completely, then add the cream cheese and incorporate thoroughly into the sweet potatoes… Savory Mashed Sweet Potatoes: Made with minced garlic, fresh chopped parsley, parmesan cheese, salt and pepper. For more savory Mashed Sweet Potatoes: reduce or omit the maple syrup and either add cheese or additional herbs. Both Parmesan cheese and Gruyere cheese are be tasty.