Thaw your frozen tuna steaks in the fridge overnight or for at least 4 hours.
Dice the tuna into cubes, about half an inch thick.
In a medium bowl, whisk together the soy sauce, sesame oil, honey, sambal oelek, ginger, and green onions.
Toss the diced tuna in the marinade to coat evenly. Cover the bowl and place in the fridge for 30 minutes (up to one hour).
Leave in the fridge until ready for assembly.