This takes a fortnightly Tesco trip and then 4 minutes prep every day; it is my ‘go to’ for those weeks when I am working flat out.
Next to the flavoured packet rice pouches in tescos are packet lentils of various flavours. Get a bunch of both. Then buy some tins of mixed beans in water (or just red kidney beans). And buy some ready cooked protein (salmon, sliced chicken, salami, chorizo) and some long-life tortillas, and whatever sauce you fancy (Nando’s hot is our choice). Grated cheese, too, if you like dairy, maybe some soured cream.
Every other evening microwave one rice and one lentil pouch, and mix together along with the protein and sauce and mixed beans. Make into a wrap or eat as is, with cheese or cream or whatever you have to hand on top. You will have enough to put in fridge for next day to eat cold (maybe with a side of cold baked beans).
because I don’t like thinking about this stuff, I always buy just the Mexican flavoured lentils and the wholewheat rice, and microwave just that every time. One of my DC fries onions and peppers and then stirs in the same lentil/rice base, but that’s just a faff too far for me.