Spray a 9x13 casserole dish with Non-stick spray and set aside.
Cut French bread into bite sized pieces, and place into prepared pan.
In a large bowl, combine milk, eggs, cinnamon, brown sugar and vanilla extract. Pour over top of the Brioche bread.
Cover with aluminum foil or plastic wrap and place in the fridge for at least 2 hours or up to overnight.
Preheat oven to 350F and remove covering from the pan. Cook for 35-40 minutes or until done and lightly browned on the top.
Remove from oven and top with berries, powdered sugar and maple syrup or your favorite toppings! Enjoy!