Preheat your oven to 375°F (190°C). Cook the San Giorgio lasagna noodles according to the package instructions, then drain and set aside.

In a large skillet over medium heat, brown the ground beef (or ground turkey) until fully cooked. Drain any excess fat, then add the chopped onion and garlic. Sauté until fragrant and soft, about 2 minutes.

Stir in the marinara sauce, basil, oregano, salt, and pepper. Let the sauce simmer for about 10 minutes to combine the flavors.

In a mixing bowl, combine ricotta cheese, egg, and 1/2 cup of grated Parmesan cheese. Season with salt and pepper to taste.

In a 9×13-inch baking dish, spread a thin layer of the meat sauce on the bottom. Place a layer of lasagna noodles over the sauce. Follow with a layer of ricotta mixture, then sprinkle with a handful of mozzarella cheese.

Repeat the layers (sauce, noodles, ricotta, mozzarella) until the dish is filled. Top the lasagna with the remaining meat sauce, mozzarella, and Parmesan cheeses.

Cover the baking dish with aluminum foil and bake for 25 minutes. Remove the foil and bake for another 10 minutes or until the top is golden and bubbly.

Let the lasagna rest for 10 minutes before slicing. Garnish with fresh parsley.