Preheat your mini waffle maker on medium heat for about 5 minutes.

In a mixing bowl, crack one egg and whisk until blended and fluffy.

Drain tuna and add it to the bowl with the whisked egg, along with shredded cheese and salt, mixing thoroughly.

Sprinkle about a teaspoon of shredded cheese onto the hot waffle maker plates, then spread half of the tuna mixture evenly over it.

Close the waffle maker and cook for approximately 4 minutes until golden brown.

Carefully lift out the chaffle once done, and repeat the cooking process with the remaining mixture.

Allow the final chaffles to cool for a minute before serving warm.