01 - Preheat oven to 375°F. Position the rack in the center of the oven.
02 - In a large skillet over medium heat, brown the ground beef and Italian sausage until fully cooked through. Drain off excess fat. Add the chopped onion and minced garlic, sautéing until softened, about 3 minutes. Stir in the marinara sauce, dried basil, dried oregano, salt, and pepper. Let the sauce simmer for 5 minutes, then remove from heat and set aside.
03 - In a medium mixing bowl, combine the ricotta cheese, eggs, a pinch of salt, and half of the grated Parmesan. Stir until well blended and smooth.
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 dish.
05 - Spread half of the ricotta cheese mixture over the noodle layer, followed by half of the meat sauce. Repeat with the remaining 4 noodles, the rest of the cheese mixture, and the remaining meat sauce.
06 - Sprinkle the remaining mozzarella and the rest of the Parmesan evenly 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 top is bubbly and golden brown.
08 - Remove from the oven and let the pie rest for 10 minutes before slicing into wedges and serving.