In a shallow dish, whisk together the eggs, milk, vanilla, cinnamon, and a pinch of salt.

Heat a nonstick skillet or griddle over medium heat and brush with butter.

Dip each slice of bread into the egg mixture, turning to coat both sides. Place into the skillet and cook for 2 minutes per side, or until golden brown. Reduce the heat to low as needed to cook thoroughly without burning. Work in batches if necessary, brushing the skillet with more butter between batches.

Serve with maple syrup and/or a dusting of powdered sugar.