Preheat the oven to 425°F and line a rimmed baking sheet with non-stick aluminum foil or parchment paper. Make sure the baking sheet has short sides to prevent steaming. Do not use a deep pan and pick something large enough that they are not crowded.
In a large mixing bowl, toss the prepped 2 large sweet potatoes with the 2 tablespoons light extra virgin olive oil. Try to coat as evenly as possible. Spread potatoes on the prepared baking sheet in a single layer allowing room around each for the air to circulate, this ensures even cooking.
Bake the sweet potatoes for 20-30 minutes (this is largely dependant on the size of your fries), flipping fries half way through. To test, pierce with a fork and wait until they are tender.
In a small bowl, toss together the 1/4 cup finely grated Parmesan cheese, minced 3 garlic cloves, chopped 2 tablespoons fresh parsley, 1/2 teaspoon fresh thyme, and 1/4 teaspoon fine sea salt.
Remove from the oven and spoon the Parmesan cheese mixture evenly over the sweet potato fries.
Increase the oven temperature to broil, return the baking sheet and watch closely. Remove when the cheese is melted and edges begin to brown- approximately 2 minutes.
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Notes
Storage: You can store any leftover baked sweet potato fries in an airtight container. Keep in the refrigerator for up to five days. Reheat in a 400°F oven for 5 minutes to gain back from crispiness, but not burn the garlic. Freezing: You can also store these homemade fries in the freezer. Store in a freezer bag for up to six months. Reheat in a 400°F oven while still frozen. This takes about 20-25 minutes.