Here's a 125 calorie 'cheese sauce' - vegan, so it's healthy, and very tasty:
http://nobreadisanisland.blogspot.co.uk/2013/03/52-diet-cheese-sauce-vegan-and-125.html
http://nobreadisanisland.blogspot.co.uk/2013/03/52-diet-cheese-sauce-vegan-and-125.html