1. For sauce, in a large saucepan cook sausage, onion, and garlic until meat is brown. Drain.
2. Stir undrained tomatoes, tomato sauce, Italian seasoning, fennel seeds (if desired), and black pepper into meat mixture. Bring to boiling; reduce heat. Simmer, covered, for 15 minutes, stirring occasionally.
3. Meanwhile, cook noodles for 10 to 12 minutes or until tender but still firm. Drain noodles; rinse with cold water. Drain well; set aside.
4. For filling, combine egg, ricotta, and the 1/4 cup Parmesan cheese. Set aside.
5. Spread about 1/2 cup of the sauce over the bottom of a 2-quart rectangular baking dish. Layer half of the cooked noodles in the bottom of the dish, trimming or overlapping as necessary to fit. Spread with half of the filling. Top with half of the remaining meat sauce and half of the mozzarella cheese. Repeat layers. If desired, sprinkle additional Parmesan cheese over top.
6. Place baking dish on a baking sheet. Bake in a 375°F oven for 30 to 35 minutes or until he

Optional
Substitute 6 no-boil lasagna noodles (one-third of a 9-ounce package) for the regular lasagna noodles and skip Step 3.

Optional
Omit the tomatoes, tomato sauce, and Italian seasoning, fennel seeds, and pepper. For sauce, stir a 26-ounce jar pasta sauce into the browned meat mixture. Do not simmer. Continue as directed in Step 4.