Beat two eggs and one egg in separate bowls with a whisk.
Season them with all-purpose seasoning.
Melt the salted butter in a non-stick frying pan over medium fire.
Evenly spread the butter on the pan with a silicone brush.
Pour the two-egg mixture into the pan.
Swirl the eggs around to cover the entire pan.
Put two slices of white bread on top of the eggs.
Once the eggs are half-cooked, use a turner to flip them over.
Use the turner and a spatula to fold the eggs toward the inside of the bread.
Put boiled mackerel and grated cheddar cheese on top of one piece of bread.
Gently flip the egg without the filling towards the bread with the filling to make a sandwich.
Brush the sides of the bread with the egg wash using a silicone brush.
Carefully turn over the toast on its edges to allow them to cook as well.
Once happy with the doneness, remove it from the heat and enjoy every bite of your Egg Omelet Toast!