Heat a griddle or frying pan over medium high heat.
In a small, flat bottomed bowl, beat the egg.
Add in milk, salt and vanilla. Stir.
Melt butter on the griddle.
One at a time, coat the bread slices in the egg mixture, placing each on griddle as soon as it is coated.
Sprinkle each slice with cinnamon.
Cook 1-2 minutes or until golden brown.
Flip and cook the other side.
Serve immediately with fruit, powdered sugar or syrup.