Leek & Butter bean Gratin

I thought I should share a nice and quick recipe by which you can use up any stale bread you have in your kitchen. The original is from the BBC Good Food webpage (http://www.bbcgoodfood.com/recipes/8090/leek-butter-bean-and-chorizo-gratin) but since it used chorizo I veganized it and it was still perfectly yummie. I used left-over baguette and drizzled some olive oil on top, but otherwise followed the recipe (well, I doubled the amount of beans and of course skipped the sausage part). It looks a bit colourless but it's simplicity and time effectiveness compensates for everything :) and next time I could add some more colourful ingredients like red bell pepper or the like.