In a casserole dish, add the eggs, eggnog, vanilla, and flour. Whisk until smooth.

Preheat the griddle or cast iron skillet.

Add 1 tablespoon of butter to the skillet. Dip the bread into the egg batter mixture and be sure to coat both sides and outer edges well.

Place in the skillet and cook for about 2 to 3 minutes or until you see the edges golden brown, then flip and cook for about 2 more minutes.

Remove and place on a wire rack and sprinkle with powdered sugar and cinnamon and top with maple syrup and serve.