This Cinnamon Roll Christmas Morning Casserole is a sweet and fluffy baked breakfast dish, perfect for holiday mornings or any special brunch. It combines quartered refrigerated cinnamon rolls with a custardy mixture of eggs, cream, maple syrup, cinnamon, and vanilla, baked until golden and finished with the classic cinnamon roll icing drizzled on top. A convenient and crowd-pleasing recipe that requires minimal prep and delivers maximum festive flavor.