Healthy Tuna Sandwich

0 Prep and chop red onion, cucumbers, celery, bell pepper, and scallion.
3 Combined the chopped vegetables, drained tuna, lemon juice, olive oil, dijon mustard, gochugaru, and ground black pepper. 
2 Mix together well until thoroughly combined. Taste and adjust for seasoning if desired.
1 Toast the bread in a toaster or in a pan over the stove top. Be careful not to over-toast them otherwise, they will be too crunchy!
7 Remove the bread onto a plate and carefully rub the garlic cloves on both sides. 
6 Serve and enjoy!