Preheat the oven to 425 degrees Fahrenheit.
Thaw, rinse, and pat dry each tilapia fillet.
3-4 Tilapia fillets
On one plate, combine the Kosher salt, parmesan cheese, and breadcrumbs. Set aside.
3/4 tsp Kosher Salt, 1/2 cup Parmesan Cheese, grated, 1/2 cup Italian Panko Breadcrumbs
Put mayonnaise on another plate. Set aside.
3 tbsp Mayonnaise
Working with one tilapia fillet at a time, coat both sides with mayonnaise. Then press one side into the breadcrumb mixture so it's evenly coated. Flip and do the same on the other side. Set aside on a baking sheet lined with parchment paper.
Continue until all fillets are coated.
Bake for 15 - 17 minutes (depending on the thickness of the fillets), or until the fish is white and flaky. Don't overcook.
