OP - I get it, I’ve been trying to reduce UPFs in our diet but like you on work days I have to take food I’m going to eat all day, and I have to leave the house at 7:30am, so it’s not really practical for me to make a lot of stuff.
just as we were thinking of reducing UPFs, we were given a load of gift vouchers and spent them on a bread maker. 18 months later, I can count on one hand the number of times we’ve bought a loaf of bread for the kids (except for when away from home on holiday!). It really is less than 5 minutes to load up the machine in the evening, set it going and have fresh bread for sandwich making in the morning.
We try to do a roast over the weekends, and taken to buying a bigger joint /chicken than we need, so there’s left over cooked meat for sandwiches for the week.
A couple of days a week I have access to a microwave at lunchtime, so will try to cook extra at dinner for things I can reheat for those lunches. We’re coming into soup season, and I do try to make extra and freeze in portions, so some days I’ll take those to work and microwave with some homemade bread.
As others have said, most pasta is made with just wheat and water, so you can buy standard pasta. Prepared salads without a dressing are fine. You often can leave the dressing off, and perhaps buy some really good balsamic vinegar to add yourself (get good stuff that doesn’t have colourings /additives). If you want to be able to easily take it to work with you, buy those travel bottles for decanting toiletries, wash one out and you’ve got a good sealable and reusable bottle to decant your own dressings in.
I recognise this is an expensive way to feed myself. Being able to afford to go low-UPF is a privilege of having the funds for the more expensive options and/or the time to cook from scratch.
And we go low UPF not UPF-free, I just don’t have the time or headspace.