Teenagers love this as a snack and it's a delicious alternative to a sandwich or toastie.
This was enough to feed two young men, one half for each. I did add a little more mayonnaise than what was asked for as well as a few spices to the tuna mixture (onion powder, garlic powder, fresh ground black pepper) as well as a little chopped dill pickle. They LOVED these. They asked if I could make these again tomorrow. Tuna salad really is very personal, everyone likes it their own special way. - 22 Sep 2012 (Review from Allrecipes US | Canada)
Overall, pretty good for a quick lunch but the tuna salad needed a little work. I added finely chopped onion and celery, garlic powder, salt, pepper and dried parsley. I toasted the bagel first then topped it with the tuna salad sliced tomato then cheese and stuck it under the broiler until the cheese melted and got nice and bubbly. - 19 Jan 2010 (Review from Allrecipes US | Canada)
Definitely a good idea, but it needs some work. What I did is use an onion bagel, that I toasted,then mix the tuna mixture up and microwave that. I also added about twice as much Dijon, then I put a piece of cheese on top of the bagel, then the tuna mix, then microwaved it for about 30 seconds. I finished it with some salt and coarsely-ground pepper. - 02 Apr 2008 (Review from Allrecipes US | Canada)