Take your Sourdough loaf of bread and slice it in half.
Meanwhile, combine the milk, eggs, cinnamon and vanilla in a deep dish. Whisk together.
Place a few pieces of the bread in the egg mixture, coating each side thoroughly.
Heat the butter in your skillet on medium high, until melted.
Place your pieces of toast in the skillet and cook on each side until the egg mixture is cooked. Your French toast may appear a little crispy when it’s done.
Serve on a plate, add butter between each slice and top with warm syrup.