01 -
Cut the bagels into halves, and toast the outer side under medium heat until it gets crispy and golden.
02 -
In a big mixing bowl, toss in the tuna, drained corn, diced onion, and mayo. Stir everything together until it’s nicely combined.
03 -
Spoon the tuna mixture onto the toasted bagel halves, spreading it evenly. Add a good amount of shredded mozzarella on top of each one.
04 -
Put them under the grill again until the cheese melts and looks golden on the edges.