Whisk eggs in a mixing bowl.
Add milk, sugar, vanilla extract, and cinnamon; mix well.
Heat a skillet over medium heat and add butter.
Dip each slice of bread into the egg mixture, ensuring both sides are coated.
Place the soaked bread in the skillet once the butter is melted.
Cook for 3-4 minutes until golden brown on one side.
Flip the bread and cook for an additional 3-4 minutes.
Remove from the skillet and keep warm.
Repeat with remaining slices, adding more butter if necessary.
Serve warm, dusted with powdered sugar and accompanied by fresh berries and syrup.