01 - Preheat oven to 375°F. Line a baking sheet with foil and set aside.
02 - In a large skillet over medium heat, cook the ground beef and Italian sausage until thoroughly browned. 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.
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.
04 - Scatter half of the shredded mozzarella evenly across 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 mixture over the noodles, followed by half of the meat sauce. Repeat the layering with the remaining noodles, ricotta mixture, and meat sauce.
06 - Finish by sprinkling the remaining mozzarella and Parmesan evenly over the top layer.
07 - Cover the edges of the pie crust with 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.