Crumb cake does not need to be refrigerated before or after baking. However, if you prepare the batter and crumb topping ahead of time, you can place the pan with the batter and crumb topping in the refrigerator up to two days before baking. Also, baked and finished crumb cake can be kept longer after baking by refrigerating (up to five days for best flavor and texture).u003cbr/u003e