Take one loaf of French bread, cut it into cubes and place the bread cubes into a large bowl at least one hour in advance so it can get hard.
In another bowl, place your eggs, milk, vanilla, sugar, cinnamon and nutmeg and beat together until well blended.
Pour your egg and milk mixture over your bread cubes and toss until all the bread is coated.
Spray your Slow Cooker with cooking spray or use a crock pot liner. Don't forget this step.
Add your coated bread mixture into slow cooker and press mixture down into Crock Pot.
Take your butter, brown sugar and cream together with a fork until crumbles form.
Take your crumbles and sprinkle over bread mixture.
Cover and place in your refrigerator for 2-4 hours.
You can cook on high for 2 hours or low for 4 hours.
Take out Crockpot insert and let the bowl come to room temperature before heating. This will prevent the Insert from cracking from the different temperatures.