Preheat oven to 350 degree F.
Boil lasagne noodles according to package directions.
In a 9x13" glass baking dish, layer the ingredients: 1/3 of the sauce 1 layer of noodles, placed lengthwise 1/2 of the sausage and 1/2 of the hard-boiled eggs 1/2 of the ricotta 1/2 of the mozzarella 1/3 of the sauce 1 layer of noodles, placed crosswise remainder of the sausage and hard-boiled eggs remainder of the ricotta remainder of the mozzarella 1 layer of noodles, placed lengthwise remainder of the sauce
Bake for 45 minutes, remove from oven, and let stand 15 minutes.
Serve, sprinkled with grated cheese, if desired.