Whisk eggs, sugar mixed with cinnamon, and milk. Add slices of bread, set aside for a while, then turn over to the other side.
Heat 2 tbsp butter in a large skillet over moderate heat. Place 4 slices of bread in a skillet and fry them on both sides until golden brown. Repeat for the remaining slices.
Sprinkle the toast with powdered sugar, garnish as you wish, and serve immediately.