Hi there, Laurel! We worry that with the lower melting point of coconut and palm oil, the cupcakes won't hold up well in those high temperatures. We might suggest instead using a blend of cocoa butter and vegetable shortening in your frosting and using freeze-dried fruit powders that compliment your cake. You can buy freeze-dried fruit powders or you can purchase freeze-dried fruit and then grind them up in a coffee grinder and sift the powder through a fine sieve to remove any large chunks or seeds. We hope this can help! 

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