The one I use is bolognaise sauce just as normal, then for the sauce I use fat free fromage frais, some fat free cottage cheese, 2 beaten egg yolks and 2 tbsps of grated Parmesan (3 syns) layer it up like normal lasagne and put healthy extra portions of cheese on top. I usually get about 6 large servings from mine! The sauce doesn't go as creamy and wet as a normal cheese bechamel sauce but its still nice, I enjoy it.