1. Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper or a silicone mat. This helps the slices roast evenly and keeps cleanup easy.
2. Slice the sweet potatoes into even 1/4-inch rounds. I find a sharp knife or a mandoline slicer works best here to get consistent thickness, which helps them cook uniformly.
3. In a large bowl, toss the sweet potato slices with olive oil, maple syrup, cinnamon, salt, and pepper until every piece is well coated. The syrup will add a lovely shine and a hint of caramelization as it roasts.
4. Arrange the slices in a single layer on the prepared baking sheet, making sure they don’t overlap. This gives them space to crisp up nicely on the edges.
5. Sprinkle the chopped pecans evenly over the sweet potatoes. If you have time, toast your pecans in a dry skillet over medium heat for 3-4 minutes before adding—they get so much richer and crunchier that way.
6. Roast in the preheated oven for about 20-25 minutes. Halfway through, gently flip the slices to ensure both sides get that gorgeous golden color and caramelized flavor.
7. Once the edges are crisp and the centers are tender when pierced with a fork, remove from the oven. Let them cool for a few minutes before serving. This is when the flavors really settle and the slices become perfectly tender yet crisp.

From personal experience, keeping an eye on the baking time is key. I’ve learned that ovens vary, and sweet potatoes can go from perfectly roasted to a bit too soft quickly. Flipping them halfway is my trick to getting that balance of tender middle and caramelized edges every time.