Preheat oven to 400 degrees
Slice sweet potatoes into ¼ inch rounds.
Toss potatoes in oil and seasonings (all except taco seasoning) to coat.
Place on large baking sheet in single layer. Cook 20 minutes, flipping halfway through.
While potatoes are cooking, brown ground beef and season with your choice of taco seasoning.
Once potatoes cooked, pull them into pile, top with ground beef, black beans, corn, cheese and jalapenos if using. Put back in oven for 5 minutes, or until cheese is melted.
Top with other items and any other toppings of choice like sour cream, salsa, Dorothy Lynch dressing (my favorite). Enjoy!