For the sweet potato toast: Pre-heat oven to 425°F, line a baking sheet with foil and spray with oil. Wash sweet potato well to remove any dirt and slice lengthwise into 1/4-inch thick toast-like pieces. You should have about 4-6 slices. Brush each slice on top and bottom with a little olive oil and season with sea salt and pepper. Pop in the oven for 25 minutes and flip over halfway through to crisp the other side. when ready to use, you can warm them up in the toaster or oven.