I try to make things as cheap as possible lol. I like to make spag bol a lot as my 2 love it. Making that tomorrow as its so easy and my sister and her GF are coming for dinner so I can feed all of us for a couple of quid! I use tesco frozen healthy living mince which is only about £2.50 and half a pack is more than enough for 3. I brown some frozen diced onion and add the mince to brown, then add 2 cartons of passata (29p each) and an oxo cube, then some dried garlic powder. I add oregano, parsley and basil (all dried) and some sugar to take out the bitterness of the passata and thats it done after seasoning! I serve it with spaghetti and garlic bread.
onion - 25p (1/4 of a £1 bag)
mince - £1.25
passata - 60p
oxo - 5p
herbs & garlic cant be more than 10p
spaghetti - 50p
garlic bread - £1
£3.75 total
Sometimes if I'm being really cheap I make pasta instead of spaghetti and will boil some broccoli and cauliflower (frozen). I chop the veg up into wee bits and mix it in with the bolognaise then mix in the pasta. Because I'm adding the veg I only need to make half the amount of bolognaise and it's really healthy too
Another cheap dinner I like to make is what Shaun calls 'awesome soup'. I make soup with diced turnip, carrot and potato, a leek, ham stock cubes, pearl barley and lentils. It's all so cheap and its more like a stew than a soup. I service it with crusty bread. Shaun absolutely loves it.
The tesco dinner for £6 is good if you cant be bothered cooking. Main, side and dessert for £6. It's not very healthy though so we only have that once in a blue moon and I always serve a massive bowl of salad with it.
Chilli con carne is easy and cheap too. Mince, onion, frozen peppers, passata or tinned tomato, garlic, cumin, coriander, paprika, cinnamon. You're supposed to add kidney beans (tesco value - about 20p a tin) but my family hate them so I don't.
These are all the dinners that I have all the ingredients for in my cupboard and freezer at any time. If I run out of cash or can't be bothered to go to Tesco, I know I can always knock any of these up. Well, except the soup.
Stir fry is good too if you have a kid who isn't fussy. Chicken, stir fry veg (pennies in tesco), dried egg noodles and soy sauce. You can add honey too if you want a bit of sweetness. Or lime juice and a little brown sugar if you want it tangy.