Cinnamon apple mascarpone bread pudding is a comforting baked dessert that pairs tender spiced apples with rich custard. Stale brioche or challah soaks up a sweet mixture of milk, cream, and cinnamon to create a soft, pillowy base. Caramelized apples and creamy pockets of mascarpone cheese are layered inside before baking to a golden brown finish. A final drizzle of pure maple syrup adds a touch of earthy sweetness. Serve this warm casserole for a cozy weekend brunch or a special holiday breakfast.