In a large mixing bowl, whisk together the milk and eggs.
Add the brown sugar, flour, cinnamon, vanilla extract, and salt to the mixture. Whisk until smooth.
Heat a griddle or frying pan over medium-high heat and lightly oil it.
Dip each slice of sourdough bread into the mixture, ensuring it's fully saturated.
Cook each slice of bread on the griddle or frying pan until both sides are golden brown.
Serve immediately with toppings of your choice. Suggested toppings include berries, whipped cream, maple syrup, and Liquid Cinnamon Roll Syrup.
Notes
To Freeze: cool french toast completely on a wire rack and then transfer the bread to a parchment paper lined baking sheet. French toast can be stacked with a sheet of parchment paper in between each layer. Freeze until solid, then transfer to a resealable plastic freezer bag for long term storage.To Reheat: Microwave on high for about 1 minute per slice until warmed through OR toast in a toaster until heated through for a crispy exterior.Serve with liquid cinnamon roll syrup!