still have a tasty nutritious meal. pretty much anything tastes good in a stew or soup and it also is very healthy for you.
cooking for a smaller number of people can actually be more expensive per plate. when cooking in bulk the price per plate is much cheaper. so even when cooking for two apply the same principle and make extra to freeze meals for next week.
start your shop at the cheaper budget stores and then when you have exhausted most purchases on your list move to the more expensive high street stores for the last few items. this way you can buy as much as possible at the lowest 