In a large frying pan sauté your chopped shallots and minced garlic in 3 tbsp of olive oil on medium heat for 2 mins. Then add in your shredded sweet potatoes.
In your muffin tins, line each cup with 1 wonton wrapper. Put 1 1/2 tbsp of filling in each center. Sprinkle crumbled cotija cheese on top and repeat for each one.