Preheat the oven to 325 Degrees F. Cook the sausage in a saucepan until brown, drain the fat, and set aside.
Prepare pasta according to package instructions; drain the pasta. Place the drained pasta on wax paper in one layer until ready to cook.
In a large mixing bowl, combine the ricotta cheese, sugar, egg, parsley flakes, nutmeg, salt, and pepper to taste.
In a 9 x 13-inch baking dish, layer 1 1/3 cups sauce, a layer of pasta strips, half of the ricotta cheese mixture, mozzarella, and sausage, and another layer of pasta strips.
Continue layering, finishing with the remaining 1 1/3 sauce. Sprinkle parmesan cheese on top.
Cover the baking dish with aluminum foil and bake for 30 minutes, then remove the foil and bake for another 15 minutes. Let stand for 10 minutes before cutting. Enjoy