Had another thought! How about search for healthy family meals for a fiver. You can then batch cook and freeze the rest for something quick in an evening. You should get about four meals for 5 quid then.
Slow cookers are really good also. can cook whatever in them, lovely stews,soups and casseroles.you can buy the cheapest cuts of meat because the slow cooker make them so tender, throw in some veg and a stock cube and you'll have about 3-4 potions to freeze for other days!
Also if you batch cook it means less time cooking plus it does work out cheaper!