Preheat your oven to 375°F (190°C). Place your rimmed baking sheet in the oven while it heats up.
Whisk the eggs, milk, sugar, vanilla, cinnamon, and salt together in a shallow bowl or pie dish until completely combined and smooth.
Remove the hot baking sheet from the oven carefully. Brush the melted butter generously over the surface of the pan.
Dip each slice of bread into the egg mixture. Let it soak for about 10 seconds per side, allowing the excess to drip off before moving it.
Arrange the soaked bread slices in a single layer on the hot baking sheet. Ensure they do not overlap.
Bake for 10 to 12 minutes. Remove the pan, flip each slice over, and return to the oven.
Bake for another 4 to 6 minutes until the toast is puffed up and golden brown on both sides.
Serve immediately with maple syrup, fresh fruit, or a dusting of powdered sugar.