Potato, onion and bacon bake.
Use 1 large potato, an onion and 1 rasher of bacon(chopped into tiny pieces per person) Layer in a casserole dish, seasoning between cycles, pour over 1/4pint white sauce per person. Bake at 170 for about 1 1/2hrs-2hrs. Serve with frozen mixed veg.
Use the rest of the bacon, chopped, 2 onions, 2 decent sized potatoes and half a 2lb bag of frozen cauliflower to make cauliflower and bacon soup. Serve with bread.
Use the rest of the cauliflower to make cauliflower pasta bake. Cook pasta and cauliflower. Mix with white/cheese sauce, pour into oven dish, scatter with a little grated cheese mixed with breadcrumbs and bake till bubbly. Serve with mixed veg.
Spicy bean baguettes: make a veg chilli from 2 tins kidney beans, an onion, a tin tomatoes, chilli powder, garlic and a good pinch of sugar. Add a dash of lemon juice if you have it. Slice a baguette up thickly (or just use ordinary bread.) Toast one side of each side. Sprinkle the other side with a little cheese and melt under the grill. Serve toasted cheese slices with the beans on top.
Pasta in tomato, onion and herb sauce with grated cheese and garlic toast.
Shopping list:
6 baking potatoes
1 pack bacon (8 rashers or pack of cooking bacon.)
2kgs onion
1 bag frozen mixed veg
1 bag frozen cauliflower
Milk
small block cheese
2 loaves
2 tins kidney beans
3 tins tomatoes
1kg pasta
I am assuming that you have things like garlic, chilli, herbs, flour butter/oil and the like. If you do, you should be able to make these meals really cheaply.