Preheat your oven to 400 degrees F. It's crucial to have the right temperature to ensure the chips bake evenly and come out crispy. Make sure your oven is hot enough before you start!
In a large bowl, toss the sliced sweet potatoes with the olive oil, coarse salt, and fresh rosemary needles. Use your hands to ensure every slice is well-coated. The oil helps the chips to crisp up nicely, while the seasoning adds a burst of flavor.
On a large baking pan lined with an oven-safe rack, place the sweet potato slices in a single layer. Avoid overcrowding the pan, as this can lead to steaming instead of baking. You want each chip to have its space to get crispy!
Place the baking pan in the central part of the oven and bake for about 30 minutes. Keep an eye on the chips as they bake—they can burn easily! You should see them turning golden brown around the edges.
Once the chips are cooked, take them out of the oven and leave them to cool down. The cooling process is essential, as it’s when they become that beautifully crispy texture we all love. Patience is key here!
