I had a recipe for this too. The first time I made it it was a mess! The recipe called for "sweet" milk and I thought was sweetened condensed milk, LOL !!
It turned out to be picture perfect but the taste was O SO Sweet !!! Then I found out that sweet milk is whole milk. The second time I made it it was much better
My DH loved it but I guess I prefer a creamier chesse sauce on mine.
I will do a search through my recipes and see if I saved it ( I think I pitched it after I didnt like it ). I know it called for milk, eggs and cheese. I think that was it.
Hope you have better luck making it than I did !!