I am making homemade hamburgers buns as I often do. Everything usually goes smoothly and they always taste oh so yummy! One thing I always do before sticking the buns in the oven is, brush melted butter on the tops. Well today as I was getting them ready for the oven, I noticed that I have no butter! So I thought, no biggie.. I'll just brush them with olive oil! Yeah, well I did that and then all of the sudden the buns went flat! Okay, so I'm not going to sit here and pretend I'm a pro at making bread but I've never had this problem before.. What went wrong? Was it my dough or was brushing them with olive oil some kind of big no no that I don't know about? Keep in mind please that no one taught me to bake or cook.. I try to figure all these things out on my own so what may be obvious to you may not be to me. Thanks! Also, do you think they will rise again? And of course today I would just have to have company for dinner! ;p The only thing I did different was the olive oil. I used the same amount of yeast, etc as before.