@HungryHippo11
The sort of processed foods which I would struggle to avoid:
Stock cubes
Tinned tomatoes and tomato puree
Wine (for cooking)
Pasta/rice
With those ingredients plus various herbs, spices, meats etc. Then I could make lots of different dinners and lunches.
Stock can be made pretty easily and then frozen (ideal way to use up the last bits of flavour from a Mumsnet Chicken!), which then provides the perfect base for soups.
I wouldn't regard tinned tomatoes as ultra processed in the slightest, any more than I would tinned fish, frozen veg or rice (that you actually have to cook rather than chuck in the microwave for 2 minutes on high). I wouldn't have thought that a decent wine would be, either - and tomato puree is a way of accessing greater amounts of lycopene compared to fresh.
Because I had to go gluten and cow's milk/lactose free for medical reasons, I found my consumption of ultra processed foods almost vanished overnight - because everything that's quick and easy in the supermarket contains both. However, what I have discovered is that since doing that, I've actually been wanting something sweet each day (fruit or a GF nut/seed/fruit bar) which I wouldn't ever have done before - so I think there must be so much sugar added to normal 'savoury' foods that I'm missing it.
In terms of quick and easy foods, soup is probably one of the quickest - cook onion/veg/a potato to give the creamy texture if wanted, chuck in some frozen stock, sea salt and whatever spices or herbs, blitz. Curry (tonight's dinner) - onion, garlic, ginger, spices, tomatoes, peppers, chicken, some toasted cashew nuts, rice. Because I can have ewes' and goats' milk without issues, if I want a sweet breakfast thing, I will have yoghurt, some frozen fruit, a few brazil nuts, couple of dates and some sunflower or pumpkin seeds.
I like things that generally haven't been messed around with too much. If they come from a plant and are vaguely recognisable as being a bit of a plant, fine. If they are clearly a bit of or came from an animal, fine. If you can't tell whether they've been made from a chicken or a Rhinoceros, they are probably better left on the shelf.
It's not so bad. And if I'm avoiding ultraprocessed foods for 95% of the time, I'm not going to panic over the few things I do have.