I love grilled cheese sandwiches, but sometimes you've just got to make a grown up version. For this one, I used Rainbow chard or you could swap it for Swiss chard, spinach or any other softer green.

An average of 4.6 out of 5 stars from 9 ratings Serve this gratin as a first course, as a side dish with grilled chicken ... lidded pan and add the chopped chard ribs. Stir, then cover and ...