Whisk together the egg, milk, sugar, salt and vanilla till the sugar is completely dissolved.

Heat a pan and rub butter generously on it. Dip a slice of bread on both sides and drop onto the hot pan. Cook both sides till done. This batter is enough to generously cover four slices of bread.

Spread a teaspoon of Nutella on one and top with another. Repeat for the other two slices of bread.

Cut through in between - or why be even bothered! Enjoy warm...