Real maple syrup and an insane amount of butter bring so much richness and flavor to this crock pot french toast casserole recipe.
Mix together the 1 cup of brown sugar, 1/2 cup of butter, and maple syrup in a microwave safe bowl. Microwave in 30-second increments until melted.
Pour into a greased casserole crock pot insert.
Cube the bread and pour over the top of the sugar-butter mixture.
Combine the 8 eggs, milk, cream, 3/4 cup of sugar and vanilla. Beat until the eggs are completely beaten.
Pour over the top of the bread, pressing the bread down to completely saturate it.
Cover with the crock pot lid and refrigerate overnight.
In the morning, make the crumb topping. Combine, the flour, brown sugar, cinnamon, salt, and cold butter cut into small pieces. Pour over top of the bread.
Place in the crock pot and cook on high for two to three hours.
Serve with maple syrup.