Spray a 9x13 baking dish with pam baking spray and set aside
Using a large bowl, mix the apples, sugar, and cinnamon. Set aside
Using a large bowl, combine the french bread and the brioche bread
Sprinkle half of the bread mixture into the baking dish
Toss the other half of the bread mixture with the apples and then pour the mixture into the bakingdish
Using a large bowl, whisk the eggs until lightly beaten
Whisk in the milk, ½ C sugar, 2 tsp pure vanilla extract, and 2 tsp ground cinnamon
Pour the milk mixture over the bread and apples in the baking dish
Lightly press the bread mixture down to make sure it becomes completely coated in the milk mixture
Cover with plastic wrap and place into the fridge overnight
Preheat the oven to 350 degrees and remove the french toast from the fridge and allow it to rest on the counter for 30 minutes
Using a medium bowl, make the crumble by whisking the flour, oats, brown sugar, cinnamon andsalt until combined then add in the butter cubes
Using a pastry or fork, cut the butter into the dry ingredients to create a crumble type mixture
Sprinkle the crumble mixture on top of the french toast and bake in the oven for 45-60 minutesor until the top is set and firm in the middle If needed, tent with foil and bake for an additional 10-15 minutes or until the center is setRemove from oven and allow to cool for 45 minutes before servingServe with maple syrup and fresh whipped cream!