Preheat oven to 400 degrees F.
Wash sweet potatoes well, dry and poke all over with a fork. Wrap tightly with aluminum foil. Set on a rimmed baking sheet and bake 50 - 60 minutes or until fork tender.
To make dressing, add each ingredient one at a time, whisking constantly.
Set each roasted sweet potato on a plate and sprinkle with a pinch each sea salt and pepper. With a sharp knife, cut a slit down the center. Drizzle in a bit of vinaigrette. Pile on your preferred toppings and finish with 1 - 2 tsp more vinaigrette and a squeeze of lime. Serve immediately.