I sometimes mix a packet of crushed ready salted crisps with the cheese to go on top (you may not need all of the bag). This adds a nice crunch to the top.
I added red pepper and sweet corn to this. It was scrumptious. Xx - 18 Jul 2015
Was tasty. I used a red pepper in place of the mushrooms. It was nice because of all the colour. Am definitely saving this to make again - 21 Mar 2014
Just made it again the other day, and used frozen mixed veg instead of peas and sweetcorn. The veg had baby carrots, peas, sweetcorn and green beans, and it was awesome. - 26 Jan 2014