Easy cinnamon roasted sweet potatoes with red onions. Using this recipe, the sweet potatoes turn out perfectly creamy in the center with well-browned, caramelized edges. The hint of cinnamon and caramelized red onions add more warmth and depth to these comforting sweet potatoes.
Preheat oven to 400 degrees F, and position an oven rack in the middle
Place the sweet potato cubes and onion pieces in a large mixing bowl. Add a generous drizzle of extra virgin olive oil (3 to 4 tablespoons) Add salt, pepper, cinnamon and allspice. Toss well to coat.
Transfer to a sheet pan. Spread the sweet potatoes and onions well in one single layer (do not crowd the pan.)
Roast for 35 to 45 minutes, tossing occasionally, until the sweet potatoes are well cooked through and charred on the edges.
Notes
Tip: I use a black cast iron baking pan here. The dark color helps the veggies cook well, while cast iron provides the added benefit of even, steady heat, making it easy for the veggies to char.