For 4 small sandwiches you will need 1 can of tuna in its own juice( 200 gr.), 1 avocado, 1/2 tomato, 1/2 red onion, 4 buns, a little sauces and spices, and do so:
Buns here will suit any. I made yeast-free, as I usually use for burgers (recipe hereCut in half, dry in toaster/frying pan/oven until crisp.
Here I make a simplified version of guacamole, and not with lime, but with lemon juice, because it goes more with tuna. Chop 1 avocado with a fork, add 1/2 large tomato, cut into cubes (it is better to drain the liquid), 1/2 small head of red onion cut very finely and add to the rest of the ingredients. Squeeze the juice of 1/3 lemon, mix everything, add salt and pepper to taste.
Tuna dip: chop the tuna with a fork (no liquid, just pulp), after grinding add 2-3 tsp.Greek yogurt/low-fat sour cream and 1 tsp. Dijon mustard. Need a thick creamy consistency.
Cook a poached egg (recipe here).
We collect the sandwich: spread a little cream cheese/feta on the bottom bun, then spread the guacamole, then the tuna paste, poached egg on top, season with salt and freshly ground pepper, close the second bun. You can sprinkle with green onions, it also fits well here.
This dish will appeal even to meat eaters;)