When I told my kids that we would be having Ratatouille pasta for dinner last week, they were ecstatic. Not because they like the dish (they had in fact never tasted it before) but because of the movie. They are just obsessed with the little rat, Remy, who is bitten by the cooking bug and goes on to become a wonderful chef. Every time they watch it, Aidan asks what the rat is making when he layers sliced aubergines, courgettes and tomatoes. And every time he repeats “ratatouille” like it’s some magical word.     I decided to chop all the vegetables and place them in a roasting dish with…