Combine bread chunks and chopped apples in baking dish.
In a large bowl, whisk together eggs, milk, heavy whipping cream, cinnamon, vanilla extract, and both sugars.
Pour wet ingredient mixture over bread and apples.
Cover and let sit overnight in the fridge. When you are prepared to bake it, preheat oven to 350 degrees F.
Bake for 30-40 minutes.
5-8 minutes before the dish is ready, combine the remaining ingredients in a bowl and crumble on top of the casserole. Continue baking for 5-8 minutes until streusel topping is melted. Serve warm with syrup.