Preheat your mini waffle maker at a medium-high setting for about 5 minutes.

In a small mixing bowl, crack one egg and whip it vigorously until combined, about 1-2 minutes.

Gently fold in the drained tuna into the whipped egg, then add in shredded cheese and a pinch of salt.

Sprinkle a little extra cheese into the preheated waffle maker before adding the tuna mixture.

Spoon half of the tuna mixture into the waffle maker and cook for approximately 4 minutes.

Carefully lift out the chaffle and repeat with the remaining tuna mixture.

Let each chaffle rest for 1-2 minutes before serving.