While the sweet potatoes are roasting in the air fryer or oven, prepare the apple cider vinaigrette. In a separate bowl, whisk together 3 tablespoons of light olive oil, 1 tablespoon of apple cider vinegar, 2 tablespoons of apple cider, 1 tablespoon of honey (or maple syrup for a vegan option), 1 clove of garlic (minced or 1/2 tsp garlic powder), 1/2 teaspoon of Dijon mustard (or mustard powder), 1/2 teaspoon of salt, and a dash of pepper. Set aside.