Preheat oven to 400°F.

Lay Tilapia fillets flat on parchment paper-lined baking tray, and season with salt and pepper. Bake for 10 to 12 minutes.

Transfer cooked Tilapia (and excess liquid) to a large bowl. Use a fork to break the Tilapia into small pieces.

Add mayonnaise, breadcrumbs, spicy brown mustard, dill, parsley, green onion and lemon. Mix carefully with a spoon.

Use your hands to form Tilapia mixture into patties.

Heat a skillet over medium heat. Coat the bottom of the pan with grapeseed oil.

Add the patties to the oil and fry on each side for 2 to 3 minutes, or until golden brown.

Transfer fish cakes to a tray lined with paper towels, to remove excess oil.

Serve with tartar sauce and salad.