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Save out 1/4 cup of the Parmesan cheese and 1/4 cup shredded mozzarella cheese. Set aside.
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Mix together the green onions, garlic,chopped parsley, 1/2 cup Parmesan cheese, ricotta cheese, egg, butter(if using), salt, Italian seasoning, and 3/4 cup mozzarella cheese.
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Mix cheese/egg mixture with cooked spaghetti and place on the bottom of a shallow casserole dish.
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In a bowl, mix spaghetti sauce with tomatoes. Pour over spaghetti mixture.
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Sprinkle with remaining 1/4 cup Parmesan cheese and 1/4 cup mozzarella cheese that was set aside.
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Bake about 30 minutes at 350 degrees. After pulling out of oven pie will feel firm to the touch.
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Garnish pie with chopped parsley.