I empathize with you OP. I like a lot of plain food (hehe).
I like food dry, not covered in sauces or creams or whatever. I look at a lot of the menus in trip reports, and just kinda shrug.
I've flown AA on LHR-JFK and its been okay (also the sundaes are amazing). But my honemyoon trip will have my fiancee and I in Qatar business and Etihad First, so I'm not sure I will find something as appealing for me.
Even in economy, on some flights that are allow it, I've requested the fruit plate. That's easy enough for me, and then I try to add on whatever I can (nuts, dessert, bread).