In answer to your Question , Yes there are Mobs in instances that will drop high level recipes .
An example i just looked up http://wow.allakhazam.com/db/item.html?witem=24172&source=live&locale=enUS
If you check the lists available here http://wow.allakhazam.com/db/skill.html?line=755 it does not take long to find them .
And as we do not know what you already have it is not easy to suggest where you should look for new recipes.