I have a request for a chocolate cake with a peanut butter filling and also a vanilla cake with a citrus or fruit filling. I need non-perishable recipes for the fillings. The cake will be made the day before and travel in a warm car for 2 hours. I have read several posts and see something about Rich's Bettercream but I do not have access to that here. Any suggestions for my fillings?
Have you tried the fruit fillings that come in the sleeves (Henry and Henry). You can get them from GSA.
Then for the peanut butter, wouldnt a buttercream filling be safe? This might help
If it is going to be subject to heat over a long period of time, what about just flavoring some of the buttercream? Fold in peanut butter for the one, and add citrus extract or jam for the other...just a thought!