I’ve used as little as ½ lb. of shrimp,1 lb. shrimp/ no scallops, more cheese on top…sautéed some mushrooms with the onions… depends on how many I’m serving. Can use 8 noodles, layer 2 X’s; 9 noodles, divide in 3 layers. Make it yours! And you can make it the day before, bake the day you serve it.