Family of 4 here including a 19 and 15 yr old.
I meal plan for a week, working out what I need to use up. Since the eldest has been back from Uni it has been roughly £180 each week. Sometimes more, or less. This does include some wine and treats, and food for the cat. Eldest is also veggie, so I am buying extra products for her that I wouldn't normally.
I do also tend to buy extra each weeks, so normally every couple of weeks, my weekly shop may just be a 'top up' shop for £60 odd. This week I am using up odds and ends from the freezer and veg along with a small shop.
Today-Roast Chicken (plus vegetarian snags) Stuffing and gravy, Green Beans, Carrots, Broccoli, corn on the cob and Mash. (DP wont eat the broccoli, and DS won't eat the green beans!)
Tomorrow-Left over chicken and veg in a homemade pie (also veggie version), Frozen peas and roasted sweet potato.
Tuesday-Sausage/Veggie sausages, Quiche, Frozen chips and onion rings and sweetcorn.
Wed-Chilli Con Carne (plus portion of vegetarian chilli I batch cooked and froze last week) Rice and Nachos.
Thursday-Breaded chicken (also plant based soya version) Jacket Pots garlic butter and cheese, mixed salad.
Friday-Take-Away.
I have in the past, had to meal plan each week on a lot less money. I would buy a sack of potatoes and large box of chicken eggs from local farms for a start. Get a 3 for £10 meat deal in a supermarket. A decent selection of veg, herbs and cheap tinned tomatoes, value pasta, block of cheese etc and get inventive.