01 - Preheat your oven to 375°F. Position the rack in the center of the oven for even baking.
02 - In a large skillet over medium heat, cook the ground beef and sausage together, breaking apart with a wooden spoon, until fully browned. Drain off excess fat. Add the finely chopped onion and minced garlic, sautéing 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 across the bottom of the pie crust. Lay 4 cooked lasagna noodles over the cheese, trimming them as needed to fit the pie dish.
05 - Spread half of the ricotta mixture over the noodles, then spoon half of the meat sauce on top. Repeat the layering with the remaining 4 noodles, the rest of the ricotta mixture, and the remaining meat sauce.
06 - Finish by scattering the remaining mozzarella and Parmesan evenly over the top of the pie.
07 - Cover the exposed edges of the pie crust with aluminum foil to prevent overbrowning. Bake for 40 to 45 minutes, until the filling is bubbly and the cheese is golden on top.
08 - Remove from the oven and let the pie rest for 10 minutes before slicing into wedges. This allows the layers to set for cleaner portions.