The kids don't eat junk food per ce but they don't and won't eat anything too mysterious. Well my son won't, he is fussy as they come.
Claims he doesn't like chicken these days, despite eating chicken nuggets. Swore for years he didn't like sweetcorn, now suddenly likes it etc you get the point.
Might have a look at that book though, if we are going to be in the kitchen then may as well be in it for both sets of food.
Might even be able to get them involved, making their own burgers and stuff. I'm undoubtedly biased, but there's some really tasty meals in there. We usually make them in a big batch and then freeze the leftovers so there's an easy (healthy) meal if you're pushed for time, as you can often go for a quick and unhealthy option at those times. I've got prawns and pappardelle for lunch. Hardly any fat (I think about 14g), but with a good dose of carbs and protein plus all the other goodies you get from fish. The author of the book breaks things down by the time taken to make it, and this took about 10 minutes so not hard at all (and I'm a rubbish cook). You use a bit of lemon and garlic with it to give it a really nice flavour.
It certainly needn't be 'rabbit food', and she has a couple of kebab recipes, home made burgers. You mentioned spag bol earlier, and there's a lovely pork and apple meatball recipe that has, I think, around 15g of fat in it. Lovely stuff
