Pre heat the oven to 400 degrees, and poke a fork into each sweet potato 4-5 times.
Use your hands to smear the ghee, sea salt, and pepper over each sweet potato, and place them in a baking dish.
Roast the sweet potatoes at 400 degrees for 1 hour to 1 hour and 15 minutes. The sweet potatoes should be soft when you poke a fork in them. Store your sweet potatoes in an airtight container in the refrigerator for up to a week.
To re-heat roasted sweet potatoes, place the sweet potato on a baking sheet and into a cold oven. Pre-heat the oven to 350 degrees and once it is pre-heated you can turn the oven off and let it warm through to your liking. This doesn’t take any longer than 15 minutes.