Step 1

Place the tuna steaks in a shallow plate or bowl.  Pour the sesame oil and soy sauce on top of the steaks and flip to coat in the sauce.  Set aside to marinate.  In a separate shallow bowl or plate, add the sesame seeds.

Step 2

Place a non-stick skillet large enough for both steaks over medium-hi heat.  leave to get hot.

Step 3

Coat each tuna steak in the sesame seeds on all sides.  Place in the hot skillet and sear for 1 minute on each side.  Remove from the skillet to a cutting board.  Slice in 1/2 inch thick slices.