Pierogi Lasagna
INGREDIENTS
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12 lasagna noodles
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1/3 cup vegetable oil
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5 medium-sized onions, finely chopped (about 3 cups)
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1/2 teaspoon black pepper
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1 1/2 cups (6 ounces) shredded Cheddar cheese
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6 cups warm seasoned mashed potatoes, store-bought or homemade
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