Cancel the DD's, and put food on the table.
I know its robbing peter to pay paul, but it gives you more time to eBay, flog stuff, whatever.
Also, if you are struggling, do you have any DVD's you or the kids no longer watch? We took about 12 down to CEX and got £18 the other day? You need to take ID with you and proof of address I think. You can go on their website and find out what they are worth before you take them too.
I hope you can get sorted. I echo the others with potato and pasta based meals. You can get massive bags of them for very little, and they are very filling.
My favourite dish for when the pennies are not adding up is pasta, with value tinned chopped tomatoes, and just add a few herbs whatever is in the cubboard. Sometimes there are no herbs. I just have the tomatoes. Tastes alright, costs about 15p a portion if I remember rightly.