West Indian sweet potato curry. Put the potatoes in salted water and bring to a boil, then parboil for about 5 minutes. One of the easiest and most useful ways to cook sweet potatoes is to roast them. How to cut a sweet potato for roasting. Prepare this vegetarian curry in just 15 minutes. Preheat oven to 450º. 17 ratings 4.1 out of 5 star rating. Roast until tender, tossing halfway through, 25 to 30 minutes. Peel the sweet potato: for the best flavor and texture, I recommend peeling the sweet potato first. Gluten-free . Photo: Kim Laidlaw. How To Cook Sweet Potatoes in the Oven. Sweet potatoes would have to be one of the most versatile ingredients in the kitchen. Sweet Potato Roasties. Baked, smashed, mashed, stuffed or made into wedges, cakes and casseroles. Sweet potato, avocado, a runny egg and a drizzle of spicy sriracha make a delectable dinner 30 mins . From sweet potato nachos to sweet potato tacos and healthy chocolate milkshakes, sweet potatoes are so versatile and so delicious! High heat will help us get those crispy edges on the sweet potatoes! 4-5 large sweet potatoes, peeled and cut into chunks (about 2 bites a chunk is good) garlic onion oil (plain olive oil or other vegetable oil would be fine) Preheat the oven to 400’F. Sweet Potato. Vegetarian . Peel your sweet potatoes and dice them into small cubes with a knife. Sweet Potato Roasties. On a large baking sheet, toss sweet potatoes with oil and season with salt and pepper. Preheat your oven at a high temperature. Last year I posted a recipe for my Scottish husband’s favorite potato dish (something that is near and dear to the hearts of nearly every Brit I know): potato roasties.This year, I thought I’d get a little crazy and make them using sweet potatoes. How to roast sweet potatoes. Easy . First, preheat oven to 450 degrees. Cut off the ends and a lengthwise strip: removing a thin lengthwise strip on the bottom of the potato allows you to set the sweet potato sturdily on your cutting board.