Bipley, I empathise - I too am not a cook

Don't be afraid to just experiment, it's easy to add more cream or cheese if you're not getting the result you want... Cooking for one I use about 2 tablespoons of double cream, warm it up without allowing it to boil and stirring all the time, then add about 1 oz of grated hard cheese and keep stirring until it's all blended in. Then eat it