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["Preheat oven to 375*F.", "Cook the noodles according to the package instructions; drain.", "In a non-stick skillet over medium-high heat, cook the onion and sausage until the sausage is no longer pink, 6-8 minutes; drain the fat.", "Reduce the heat to medium; stir in the tomato paste, 1/2 tsp.", "salt, 1/2 tsp.", "garlic powder, 1/2 tsp.", "Italian seasoning, and 1/4 tsp.", "pepper.", "Add the milk; cook, stirring, until thickened, about 3 minutes.", "Reserve 1 1/2 cups marinara sauce; stir the remainder into the skillet.", "Remove pan from heat.", "Combine the ricotta cheese, 1 cup of the mozzarella, Parmesan cheese, egg, and the remaining salt, garlic powder, Italian seasoning, and pepper.", "Spread 1/2 cup of the reserved marinara sauce in the bottom of an ungreased 13x9"" baking dish; top with 4 whole noodles, 1/3 of the cheese mixture, and 1/3 of the sausage mixture.", "Repeat twice, ending with the noodles; top with the remaining sauce and sprinkle with the remaining mozzarella.", "Cover the pan with foil.", "**(At this point, I usually like to refrigerate the lasagna for about 1 hour to let the flavors blend--if you choose to do it this way, preheat the oven when you're ready to bake.)** Bake until bubbly, 40 minutes; uncover the pan and bake 5-10 minutes longer.", "Serve hot."]
