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["Cook noodles in boiling salted water until tender but firm (about 8-10 minutes).", "Drain; rinse under cold water.", "Arrange in layer on towels.", "Filling: Squeeze spinach dry and chop.", "In skillet, heat oil over med heat; cook mushrooms, onions, garlic, basil, salt& pepper for about 15 minutes or until starting to brown and liquid is evaporated.", "Stir in spinach; cook, stirring for 2 minutes.", "Let cool for 5 minutes.", "Stir in egg, ricotta cheese and parmesan cheese.", "Tomato cream sauce: Melt butter over med heat.", "Cook onion stirring occasionally for 8 minutes or til very soft.", "Sprinkle with flour and cook, stirring for about 1 minute.", "Stir in cream and bring to a boil; cook for 1 minute.", "Drain tomatoes, reserving juice.", "Add tomatoes to pan along with salt& pepper.", "Bring to a boil.", "Transfer to a blender and puree til smooth.", "Blend in reserved tomato juice.", "Set 1/2 cup of sauce aside; pour remaining sauce into 9x13 dish.", "Working with one noodle at a time, spread 1/2 cup of the spinach mixture on noodle, leaving 1/4"" border uncovered.", "Starting at short end, roll up.", "Cut in half lengthwise; place cut side down in sauce.", "Drizzle rolls with reserved sauce; sprinkle with mozzarella cheese.", "Cover tightly with foil.", "Bake in a 350 oven for 40 minutes or until bubbly.", "Uncover and broil for 2 minutes or until golden.", "Let stand 10 minutes before serving.", "Sprinkle with parsley if desired."]