How do I convert a normal lasagna recipe to use no-boil noodles? Do I need to add extra liquid or just make sure that the dish is covered really well?
You can use 'no-boil' pasta straight from the box, alternatively, you can soak it it warm water for a few minutes. The soaked pasta may prove to be a little easier to manipulate when building the lasagne. However, providing there is enough liquid in the sauce, soaking is unnecessary.
Personally, I'd cover the dish with foil until the last 10 to 15 minutes of the cooking process, this will allow the pasta to cook and it should prevent the sauce from drying out. The last 10 to 15 minutes uncovered will provide the colour.