Mix Olive Oil and lemon juice together. Sprinkle fillets with thyme, salt and pepper and marinade in oil and juice about 10-15 minutes. I used a George foreman indoor grill sprayed with canola oil so the fillets would not stick and both sides cooked simutaneously. I cooked about 5 mins and then used a spray bottle and spritz the fillets with the lime juice and resumed cooking for about 3 more minutes.