Heat the vegetable oil over medium-high heat in a large frying pan. Use enough oil to coat the bottom of the pan in a thin layer.
Add the sweet potatoes to the pan. Season with a pinch or two of salt, then toss to coat the sweet potatoes in the oil and salt.
Cook the sweet potatoes until they're crisped on all sides, about 20 to 25 minutes, stirring infrequently.
Turn the heat to low and sprinkle in the paprika, chipotle powder, and another pinch or two of salt. Stir to combine and cook for another 2 to 3 minutes, then serve hot.
Notes
How to make sweet potatoes crispy: The secret to making sweet potatoes crispy is to sauté them with a little bit of oil. This helps draw out the moisture that tends to make sweet potatoes mushy, and helps caramelize the outsides of the sweet potato cubes. The other trick is to not stir them too often, so they have a chance to caramelize on all sides.Serving suggestions: These crispy sweet potatoes are the perfect side dish since they don't require your full attention during cooking. It's easy to whip up a batch while cooking other things for dinner, like marinated chicken and cornbread. You can also serve these for breakfast or lunch, with eggs, bacon, or sandwiches! Check out our blog post above for recipe ideas.Storing leftovers: Crispy sweet potatoes are best served and enjoyed fresh, as that is when they will be the crispiest. But leftovers can be stored in an airtight container in the fridge for up to 5 days.Reheating leftovers: There are two ways to reheat these - the easy way, and the crispy way!
The easy way - Zap them in the microwave for 30 to 60 seconds (note that they will lose most of their crispness this way)
The crispy way - If you want your leftover potatoes to remain crispy, then it's best to reheat them in a frying pan over medium heat with a little bit of oil. This method will take a little longer (about 5 minutes or so) but will make sure your sweet potatoes are satisfyingly crispy.