Um... this is DRINKS planet. Unless you plan on making lasagna and then putting it in a blender and want advice on this I am not sure why you are posting the question here.
That being said, what you are talking about is basic white vegetable lasagna. Delish has a bunch of good recipes for anything you can think of on the site, it's free, and a good place to look. It won't be the pedifile's (The frugal gourmet) recipe, but you can look at a bunch of recipes and maybe figure out one of your own.
Here is a link direct to the search for "White Lasagna":
http://www.delish.com/search/fast_search_recipes?
current_page=1&search_term=white%20lasagna