Aussie Creamy Fish - cooking recipe

Ingredients

2 1/2 cups cream
1/2 cup tasty cheese (cheddar, I assume?)
1/2 small onion, grated
1 garlic clove, finely chopped
1 tablespoon nam pla (fish sauce)
1 tablespoon tomato paste
1 lb fish fillet (Australian mackeral, barramundi, tuna, salmon, or coral trout)

Preparation

Make sauce by combining all ingredients (except fish fillets) in saucepan over medium heat until cheese is melted.
Place fish fillets into baking dish (one that can go directly onto the table works well). Spoon the sauce onto the fillets.
Bake at 425 - 450 degrees for 10-15 minutes (for thick fillets), or under the griller (for thin fillets) until cooked and top is browned. Fish should flake easily with a fork; on the other hand, it shouldn't look dried out either. Alternatively, you can also reduce the sauce in a frypan on a medium to hot heat on top of the stove. Turn heat down to medium and then cook the fillets in the sauce.