Now, here's where things can get a little tricky. When freezing buttercream icing, it's essential to avoid introducing air into the container or bag. This can cause the icing to become separated or grainy when it's thawed. To avoid this, try to freeze the icing in small batches, and always use a high-quality container or bag that's designed for freezing!
Can You Frosting Freeze at Alonzo Caraway blog
Another thing to keep in mind is that frozen buttercream icing will typically need to be thawed and re-whipped before use. This is because freezing can cause the icing to become stiff and separated. But don't worry, this is an easy fix - just leave the icing at room temperature for a few hours, or thaw it in the fridge overnight, and then give it a good whipping before using!
So, why should you bother freezing buttercream icing in the first place? Well, for one thing, it can be a huge time-saver! Imagine being able to make a big batch of icing and then freezing it for later use - it's perfect for busy bakers or crafty folks who want to have a stash of icing on hand for future projects!
How to Freeze Frosting