AHey guys! I need help!

I don't know what I'm doing wrong . I never used to get bubbles under my fondant until my last two cakes! I always put my buttercream covered cake in the fridge, let it get cold thentake it out and cover it with fondant immediately . I used to do this all the time no problem and NEVER got bubble under my fondant . What am I doing wrong? And do you guys have any advice on what I should be doing to prevent the bubbles?? PLEASE AND THANK YOU!

AWe call those air bubbles cake farts. When your cake comes back to temperature it releases gasses which create air bubbles or blow outs. It happens every time I let a cake get too cold before applying the fondant. If you only refrigerate enough for the Bc to firm up but not enough for the cake to get really cold it shouldn't happen. (5-10 in the freezer or 10-15 in the fridge) it also helps if there is a hidden spot in the top of your cake that you can poke a hole to let the gasses escape. Do you allow your cake enough time to settle after filling and stacking? That could also be part of the problem. I let mine settle overnight when possible but at least a few hours. Hth:)

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Maybe I'm not leaving mine in the fridge long enough for the buttercream to get stiff??

Hmm. And yes . I lately have also been making my cakes ahead of time , freezing them, then the day of, I take them out to thaw then I apply the filling and buttercream.

Now that I think about it , this started happening when I start freezing my cakes. Could that be the problem?

I have had this happen when I don't thaw my cakes long enough when I take them out of the freezer.  They need 24-36 hours to thaw completely, the bigger the cake the longer thaw times.  Never had it happen to me either until I froze the cakes.  Learned on this site somewhere about the thaw times.

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This is EXACTLY my problem!!! Gosh!!! Thank you so much!!!!