Our budget is £250 per month for food, toiletries, household items like wash powder/toilet roll etc. 2 adults (although dh does eat mostly free at work so just lunch at home), 2 dds 14 & 10. I'm gluten and dairy free and dd2 is vegetarian so all meals are veggie (often vegan). We eat alot of beans, lentils, rice and potato based meals. As an example, this week's meal plan
Monday - slow cooker bombay curry.
Tuesday - vegetable soup (slow cooker)
Wednesday - sausages, mash and beans
Thursday - chilli and rice
Friday - jacket potatoes and beans
Saturday - pasta bake
Sunday - creamy lentil dahl.
Lunches are leftovers, sandwiches or couscous.
Breakfast is toast, cereal or bagels.
I make flapjacks and cakes for sweet treats. Or cheap biscuits.
We use frozen vegetables or yellow labels/olio. Fruit there's always oranges, bananas, apples. Then dried fruit/nuts.
I buy toilet roll and wash powder in bulk. I do a monthly savers/poundland trip to get toiletries I cant get in aldi.