I carry lunch. I have an insulated lunch bag i put an ice pack in and it fits the base of my lunches (sandwich, yogurt, fruit, the occasional drink, and/or something in a small Tupperware. I also have work snacks in a drawer of my desk just in case I need a little more. The bag fits nicely into one of my panniers and shares space with shoes

I rarely take "warm" food. I would rather save leftovers for when we don't feel like cooking dinner. If I want something warm, I also keep a frozen healthy choice in the freezer at work. I try to treat myself to eating out every week and a half.

I've never had a crushed sandwich or anything else. Ill post a pic of my packed lunch bag later

Edit: Pictures of delicious food added.
Everything I fit in my bag


Packed and ready. Still space inside if I wanted to pack more


Fits easily in pannier



Bonus: Chili in the crockpot.


Bon appetit!