Spray a 9x13 glass baking dish with cooking spray or brush with oil or melted butter.
Cooking spray
Cut the French loaf into 1-inch cubes. I do this by slicing the loaf into 1-inch slices. Next, lay the slices flat on the cutting board and cut them in half length-wise. Now slice them width-wide into 1-inch cubes. Place the cubed bread in the greased baking dish, spreading them out in an even layer.
1 French Loaf
In a large bowl combine the eggs, milk, sugar, cinnamon, salt and vanilla and whisk until well combined and pour the mixture evenly over the bread.