Good-quality tuna is key to the success of this fish recipe. Lay out your tuna steaks, drizzling with olive oil and seasoning with plenty of salt. 2. Griddled tuna steaks recipe. 2 thick tuna steaks; olive oil for brushing; Brush the tuna steaks lightly with oil, and season. Tuna steak; Olive oil; A pinch of salt; Method: 1. Serves 2 . Colorful and sweet tropical fruit contrasts with slightly bitter salad greens and meaty tuna steak in this healthy main-dish salad recipe. Put the tuna steaks into a heated griddle pan over a high heat (the pan must be very hot) and allow to cook for 1-2 mins depending on how thick the tuna steaks are. For the best results, we'd recommend cooking your tuna steaks on a griddle pan – you'll find our favourites below.