Preheat your oven to 375°F (190°C). Gather all your ingredients and equipment.

In a large skillet, heat olive oil over medium heat. Add ground beef and Italian sausage, sauté for 8-10 minutes until browned. Drain excess fat.

Stir in crushed tomatoes, tomato paste, tomato sauce, water, sugar, dried basil, fennel seeds, Italian seasoning, salt, and black pepper. Simmer for 30 minutes.

In a medium bowl, mix ricotta cheese, beaten egg, salt, pepper, and chopped parsley until smooth.

In a baking dish, spread a layer of meat sauce, then lasagna noodles, half of the ricotta mixture, and mozzarella. Repeat layers, finishing with meat sauce and remaining mozzarella and parmesan.

Cover with aluminum foil and bake for 25 minutes. Remove foil and bake for another 15-20 minutes until bubbly and golden brown.

Let the lasagna rest for at least 15 minutes before slicing to help layers set.