Combine sweet potatoes, olive oil, spices and salt in a large bowl. Toss until the sweet potatoes are evenly coated in the spice mixture.
Place potatoes on a rimmed baking sheet and bake for 15 minutes. Remove from the oven and give the potatoes a flip. Pop them back into the oven for another 15-20 minutes or until the potatoes are golden brown on the outside.
While the potatoes are cooking combine the garlic, garlic powder, yogurt, vinegar, parsley, and salt in a small bowl. Set it aside until your potatoes are ready to go!
Remove the potatoes from the oven and serve with the garlic yogurt dipping sauce. Enjoy!!