Pre-heat grill to high heat.
Divide two pieces of tin foil, one for each fillet.
Place fillets on their respective pieces of tin foil
Brush 1 tablespoon of olive oil on both sides of each fillet.
Combine the dry rub ingredients and split in half.
Combine butter, brown sugar and curry powder in a small bowl. Place in the microwave for approx. 15 seconds or until completely melted. Mix well and set aside.
Rub the dry spices well into the top of each fillet.
Place the fillets spiced side down onto the tin foil.
Place the fillets in tin foil on the grill.
Grill for 4 minutes, and then carefully flip the fillets, spiced side up.
With the pastry brush, dab the butter mixture on top of the fillets.
Close the lid and grill for another 4 minutes.
Remove fillets from heat and serve.