In a skillet over medium heat, brown the ground beef, onion, & garlic. Drain the fat. Mix in the Italian seasoning, brown sugar, 1.5 teaspoons of salt, diced tomatoes, tomato paste, & tomato sauce. Simmer for 45 minutes, stirring occasionally.
Preheat your oven to 375 degrees.
In a medium bowl, mix together the eggs, ricotta, Parmesan cheese, Italian seasoning, & 1 teaspoon salt. Spoon some sauce in the bottom of a 9×13 baking dish, enough to cover the bottom of the dish. Layer 1/3 of the lasagna noodles over the sauce. Cover the noodles with 1/2 of the ricotta mixture, 1/2 of the mozzarella cheese, & 1/3 of the sauce. Repeat. Top with the remaining noodles & sauce. Sprinkle with shredded Parmesan cheese & slices of fresh mozzarella. Bake in preheated oven for 40-45 minutes. Let stand 10 minutes before serving.
*can sub slices of fresh mozzarella cheese with an additional 1/2 cup shredded mozzarella.