Some conditions will dry out the cake faster than others, but I think 5 days is safe. NBCs are so moist to begin with, so long as you don't keep them too cold or in 100+ Vegas heat, they should be great a few days later.
How long can you freeze Nothing Bundt cakes?
After that, they need to be refrigerated for up to 5 days or frozen to preserve the moisture in the cake and the butter and cream cheese in the frosting. Just take it out of the freezer for a few hours to let it thaw to room temperature. Your cake should be fine frozen for 7-8 days.2015-05-14
How long are nothing bundt cakes good for at room temperature?
Angie Mireles WilsonNothing Bundt Cakes Our cakes are best enjoyed at room temperature, so be sure to take them out of the fridge 2–3 hours before serving. They can stay unrefrigerated for up to 48 hours. If you still have cake left, it's time to either dive in and finish that yummy cake or refrigerate it.2015-05-08
How do you keep a bundt cake fresh?
They can be kept in an airtight container in the fridge for up to five days. Before serving your bundt cake, you can allow it to reach room temperature. If your cake does not contain any perishable toppings or centers, it can be stored at room temperature in an airtight container.