How do you make French Toast Casserole?

To make French Toast Casserole, start by cubing a loaf of bread and placing it in a greased baking dish. In a bowl, whisk together eggs, milk, vanilla extract, cinnamon, and sugar, then pour this mixture over the bread, ensuring it's well coated. Let it soak for at least 30 minutes or overnight in the refrigerator. Bake at 350°F (175°C) for about 30-40 minutes until golden and set, then serve warm with syrup or powdered sugar.