Heat grill to medium-high heat (about 375-400 degrees). While the grill heats up, cut sweet potatoes into wedges and toss with avocado oil, salt, and, pepper.
Once grill is hot, place sweet potatoes directly on grill. Grill for about 25-30 minutes until slightly charred on the outside and soft in the middle. You will have to flip/move them around halfway though to make sure they all get evenly cooked.
While sweet potatoes cook, make the sauce. Combine all ingredients into a Vitamix or high powered blender. Blend for 30 seconds until combined. If you want a thinner sauce, add more water.
Top fries with fresh parsley and serve with sauce. Enjoy!
nutrition for parsley tahini sauce per one tablespoon (makes about 1/2 cup): 40 calories - 1.6g protein, 1.6g carbs, 3.3g fat, .8g fiber, .2g sugar