Lila42 I have done the same thing but with chicken. I was making mexican chicken and I had friends over and the cheese wouldn't melt. I was so embarrased cause there was this clump of cheese. So I wentg overboard on the salsa and made it to hot for our friends to eat. I think we ended up eating alot of salad that night and my DH and I ate alot of chicken for lunches and dinners.
I know, don't you just hate that? The same thing you make over and over at home with no problem won't turn out when someone else is at dinner. It's kind of like my hair, I have a great hairday when I am off from work and see no one that I know and I don't really care what it looks like. Let there be a special occasion and you can bet my hair will know it and act accordingly...lol
Oh, I forgot , here's my worst cooking disaster. Luckily, it was just my family but still...I hade made potroast with mushrooms, potatoes and onions, a simmering gravy on top. Just about done. The aroma was incredible. In a pyrex round dish, I had my infamous (melted this time) macaroni and cheese. Just about done. And then I had biscuits warming in another small pan. I went to take out my delicious dinner and actually gasped! For some reason, the pyrex dish had exploded. Glass was everywhere! Macaroni, and the wonderfully melted cheese was all over the stove. The glass was in the roast and also little bits of glass were in the biscuit pan. Has anyone ever had their glass baking dishes explode? The whole meal had to be thrown away. Then I had to clean the stove out. 
I have had glass dishes explode on me. Now I make sure the oven is no higher than 325 and when I take it out of the oven - I place it on a wooden cutting board. for some reason - burners seem to help the glass break.