Found: Bilbo Joins Bombur's Cooking Guild
Looking for a Post BOFA fix-it AU where Bilbo stays in Erebor and ends up joining the guild Bombur is part of. Which is the cooking or food handlers guild. I remember Ori got pissed about it because he wanted Bilbo to join the Scribes Guild. I also remember that pre-BOFA there had been no cooking guild and that that guild being established was part of Bombur's reward for being part of the company.
How is it always this fic that we are all looking for and can never put it together in our brains? I must have asked for A Passion for Mushrooms like 3 or 4 times while only remembering a different aspect of the story each time.