Try to have something within an hour of your run, Suz, especially if you plan to exercise again the following day. After 6 miles, your leg muscle glycogen stores will have fallen and need refilling.
If you can't face food (and I'm with you there in not finding it easy to eat after an evening run), have half a litre of sports drink or squash (not the sugar-free sort) as part of your post-run rehydration, and maybe a couple of biscuits with your bedtime cocoa. Then follow up with a big breakfast!
Athletes aiming mainly to lose fat do use a technique in which they do an evening exercise session, don't eat afterwards, then do another hard session early in the morning before eating breakfast. In theory, the muscle glycogen depletion forces them to burn fat for the second workout. I suspect that assumption oversimplifies the way our bodies work.
As your aim is to train for endurance running and the amount and intensity of exercise you do is going to increase, you'll need to get used to refuelling after your long runs. The situation may sort itself out in time. Once you're doing more miles a week, and longer long runs, you'll probably be so hungry all the time that you'll gladly fall in the front door and straight into a plate of treacle sponge and custard.
