First Step: Preparation Start by preheating your oven to 425 degrees Fahrenheit and position the racks in the lower and upper thirds for even heat distribution. Wash and dry your sweet potatoes thoroughly, then peel them if you prefer a smoother texture. Cut the potatoes into uniform fry-shaped pieces about 1/4 inch wide and thick to promote even baking; this step helps with that crispy exterior we’re aiming for in these oven-baked sweet potato fries.

Second Step: Coating and Seasoning Once your sweet potatoes are prepped, divide the fries evenly between two large rimmed baking sheets lined with parchment paper. For the best results, sprinkle 1.5 teaspoons of cornstarch and 1/4 teaspoon of sea salt over the fries on each pan, then toss them lightly to coat. Next, drizzle 1 tablespoon of extra-virgin olive oil over the fries on each pan and toss again, making sure the cornstarch is rubbed in evenly for enhanced crispiness in your baked sweet potato fries.

Third Step: Arrange and Bake Arrange the fries in a single layer on the baking sheets, ensuring they’re not overcrowded to allow for proper airflow; this is crucial for getting those roasted sweet potato fries nicely crisped. Bake for 20 minutes, then use a metal spatula to flip the fries section by section for even cooking. Swap the positions of the baking sheets between the racks at this point to ensure uniform results.

Fourth Step: Finish and Serve Continue baking for another 10 to 18 minutes until the fries reach a crispy, matte, puffed texture, keeping a close eye to prevent burning. Once done, remove them from the oven and season with optional spices like freshly ground black pepper, cayenne pepper, or garlic powder to taste. Serve your crispy baked sweet potato fries warm as a standalone snack or alongside meals for maximum enjoyment. For dietary adaptations, consider reducing oil for low-calorie versions or using arrowroot starch instead of cornstarch for a gluten-free twist.