01 - Preheat oven to 375°F. Position the rack in the center of the oven.
02 - In a large skillet over medium heat, cook the ground beef and Italian sausage until thoroughly browned, breaking up the meat into small pieces. Drain off excess fat. Add the chopped onion and minced garlic; sauté until softened and fragrant, about 3 minutes. Stir in the marinara sauce, dried basil, dried oregano, salt, and pepper. Let the sauce simmer for 5 minutes to meld the flavors, then remove from heat.
03 - In a medium mixing bowl, combine the ricotta cheese, eggs, a pinch of salt, and half of the grated Parmesan. Stir until smooth and well incorporated.
04 - Scatter half of the shredded mozzarella evenly over the bottom of the pie crust. Arrange 4 cooked lasagna noodles over the cheese layer, trimming them as needed to fit the pie dish.
05 - Spread half of the ricotta mixture evenly over the noodles, followed by half of the meat sauce. Repeat the layering with the remaining noodles, ricotta mixture, and meat sauce.
06 - Sprinkle the remaining mozzarella and the rest of the grated Parmesan over the top of the assembled pie.
07 - Cover the edges of the pie crust with aluminum foil to prevent overbrowning. Bake for 40 to 45 minutes, until the cheese is bubbly and golden on top.
08 - Remove from the oven and let the pie cool for 10 minutes before slicing into wedges. Serve warm.