In order to be able to afford to be a SAHM we needed to make drastic cuts in our food shopping bill, plus I didnt want the children to have processed foods in their early years so, my tips are:
Grow your own - we grew beans, potatoes, salad leaves, carrots and peas in pots last year
All eat the same for your main meal
Freeze leftovers - I have two preschoolers - so they have a cooked meal for lunch, therefore, even lone sausage and a small portion of mash can be turned in to a lunch for both with a small tin of beans.
Use a slow cooker and batch cook
Make the basis of a couple of meals in one go ie mince and onion. Mince and onion with dumplings one day, Bolegnease next day, turned in to lasagne (make your own white sauce - its only butter, flour and milk). You can also do sheppards pie/hotpot, meatballs, burgers, or meatloaf.
Bake buscuits and cakes instead of buying
Chickens can go a long way - roast, curry, pasta, wraps, risotto, soup. You can save the stock in small pop bottles and freaze.
Make your own ice lollys
I shop mainly at Aldi and Lidl
Pound shop for cleaning stuff
Buy washing powder etc in bulk either costco or here and get eh dishwasher stuff as the freeby
Share bogoffs etc with family and friends
Good cheap, fast and liked , meals include
Quesideas (sp) I use cheese and salami and cheap wraps - children love them
Cheese on toast
Beans and cheese on Jackets
Beans or spag on toast
Bratwust and noodles
omletts
Dippy eggs and soldiers
Eggey bread and sausage
Tomatoes on toast
You can freeze cheese - grate and pop in freezer bags
Make your own bred and pizza bases
Ask your mum what your granny used to do during the war
Make jelly's with the children, angel delight has been rediscovered in this house. You can also do half jelly, half condensed milk too.
Use any fruit that is on the way out for crumbles, baking or smoothies
Popcorn - dead cheap and the children love it.
Cut up some fruit and pop in bopwls as a snack for the children.
Dont buy chrisps
Keep sweets and treats out of sight
Bulk out things with whatever veg is on offer - peppers, courgetts etc are great with mince
Used dried pulses and soak
Children love dumlings and yorkshire puddings
Add pearl barley to soups to bulk it out