Preheat oven to 450’.
Rinse fillets with cold water and using a paper towel pat dry.
Place fillets in baking dish. Lightly season with salt & pepper. (You can also add any of your favorite spices)
On top side only, generously cover with Spicy Mustard or Dijon Mustard.
Cover with grated block Parmesan cheese. (Or any shredded cheese will work)
Bake uncovered on center rack for 12-15 minutes until cheese is bubbling.
In a pan over medium heat melt butter and season to taste with salt, pepper, cumin, and chipotle seasoning. (Or substitute your favorite Mexican seasonings)
Pat fillets dry and place in pan, sear one side, and flip.
Generously squeeze fresh lime over fish. Gradually break fillets apart until the desired size for your tacos.
Fillets turn opaque when done.
Serve with your favorite taco shells, sides and cheese. (For an extra zest include pineapple)