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Spray a 13x9 pan with non-stick cooking spray. Spoon in a little of the sauce and cover the bottom of the pan.
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Place 3 lasagna noodles on top of the sauce.
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Mix cottage cheese, egg, and Parmesan cheese in a bowl. Spread 1/3 of this over noodles.
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Add 1/3 of the sauce and sprinkle with 1 cup mozzarella.
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Now, add 3 more noodles, 1/3 more cottage cheese mixture, 1/3 more sauce. Add 1 cup more mozzarella cheese.
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One more time, do the layers.
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Bake in 350°F oven for about 1 hour. The top should be light brown and bubbly.