I'm making a baby shower cake for my sister in Las Vegas. It'll be around 100 degrees out there, i think. It's dry heat, not at all humid. It's going to be a pretty big cake....I doubt it'll hold up outside, but will it be okay indoors at 80 to 85 degrees? I'm planning on using marshmallow fondant to cover the cake. Would a different kind of fondant work better? Please help!

i live in south texas..and we have 110 degree weather with super humidity..and my fondant cakes always hold up....i use both mmf and somtimes wiltons..you should be ok!!in fact if i know its going to be outside i will only do fondant cus buttercream will melt fast!

if its not humid and the cake is not in direct sun light it will be fine! go for it i use MMF and i live in the middle east its hot and my cakes survives !

What do you use under your fondant?

I use butterecream under my fondant....would that be alright?

i dont know if that question was directed at me..buti use a thin layer of buttercream.just enough to make the fondant stick to the cake.

You guys are all awesome for responding so fast! Thank you!!!

agreed! thanks for the info. I've just recently REALLY started making cakes and with the summer coming up I was getting fairly nervous!