Use foil instead to avoid a fish fiasco. https://www.melaniecooks.com/fish-in-foil-packets-recipe/9670 When there is a choice of two ingredients, the cost is figured with the first one listed. If possible, buy tuna steaks or tuna fillet labeled sashimi quality or sushi quality. Bake at 350° for 15 minutes or until the cheese is melted. Just simply make a foil packet for fish to rest in and throw on the grill. https://www.seriouseats.com/2019/08/how-to-grill-tuna-steaks.html Often compared to traditional beef steaks, this fish has a mild taste and a light texture. https://www.skinnytaste.com/easy-grilled-fish-fillet-in-foil-packets Spread butter over cut sides of buns. Editor's Note:The cost per serving does not include optional ingredients such as garnishes. https://www.joeshealthymeals.com/cheesy-hot-tuna-sandwiches https://www.allrecipes.com/article/grilling-101-seafood-grilling For fish, it is relatively fatty--although not as much as salmon--so it is easier to get good results than it is with leaner or more delicate fish. Rich and meaty, tuna is as good on the grill as beef. Spread tuna mixture on bun bottoms; replace tops. of prepared Teriyaki sauce over the tuna. Evenly divide the vegetables among the pieces of foil. Ahi, or yellowfin, tuna steaks can make a delicious meal. You’ll have a healthy, foolproof fish dinner in minutes. Wrap in foil. www.savoryreviews.com/2009/04/27/grilling-tuna-to-perfection https://www.pioneersmokehouses.com/how-to-cook-fish-on-the-grill-with-foil While ahi tuna can be prepared in the oven or fried on the stove top, grilling the steaks is a preferred cooking method because it highlights the fish's subtle flavors. In a medium bowl, toss together vegetables, garlic and seasoning. Top the vegetables with a piece of tuna steak and drizzle 1 Tbsp. Even with taking precautions to keep the meat from sticking, though, grilling delicate pieces of fish can be a risky business. Preheat an outdoor grill to medium heat and spray one side of each sheet of foil with cooking spray.