Preheat a griddle or large skillet over medium heat. Meanwhile, add eggs to a pie plate, cake pan or shallow bowl. Whisk well with a fork. Add milk, cinnamon, vanilla and salt and whisk again.
Dip brioche bread in the egg mixture. Let soak for 2 seconds per side. Spread the hot griddle with butter then add dipped brioche. Cook for 1 to 2 minutes per side, until golden.
Brioche bread can be easily found these days in the grocery store! Take a look in the bakery section first, in case that's where they keep it!TIP: Double the recipe and freeze extras for a quick and easy weekday breakfast!