I just baked a coffee cake that has a cream cheese layer. It is just out of the oven. We won’t be eating it until this evening, 8 hours later.
Is it ok to leave it at room temperature until then?
Or should I put it in the coolerator?
It has eggs and butter, of course, but it’s the cream cheese layer that has me wondering.
Thanks!
The only danger is that somebody will get at it before you’re ready to serve it. 
IANAB, but for any ingredients that go in before baking, I think the oven will have nuked any bacteria sufficiently thoroughly for it to be good for 8 hours at room temperature.
Wow! That looks good. I’d fridge it, myself.
I’d leave it out, unless it’s very hot where you live. Random person on the internet’s opinion.
the only thing that would concern me is the cream cheese softening and getting runny.
Hmmm…the only way to be absolutely sure is for every Doper to taste a piece. 
Seriously, it’s safe not to refrigerate, but I prefer a cheesecake or cheesecake filing to be pretty chilled, not room temp.
I would refrigerate only because the cream cheese could soften. 8 hours at room temp won’t cause salmonella or anything. If you have room, refrigerate.
It’s fine to leave out. If the cream cheese didn’t get soft and runny in the heat of the oven, it certainly isn’t going to from the ambient heat of the house.
Personally, I prefer the texture of a cake when it’s room temp, not cold and stiff, but ymmv.
-Ex-pastry chef
Once it is cool (1-2 hours), refrigerate. Take it out of the fridge and plate approximately 15 minutes before serving, so it’s not too cold. Put any remainder immediately back in the fridge, as the cooling/warming/cooling cycle is just asking for trouble.
If your kitchen is relatively cool, or you have a cooler room to leave the cake, it’s probably okay until serving, but the best bet is in the fridge.
Update on leaving it at room temperature: Did so, no problems.
Update on the cake itself: Ok, but would not make it again. A little too dense, a little too sweet.
There is more than half of it left if anyone wants to swing by for a hunk.
Or maybe I’ll just leave it out in the rain.