"This hearty macaroni casserole is easy to make and very family-friendly. Prepare it the night before and reheat in the oven for a quick, weeknight meal...."
INGREDIENTS
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2 cups cooked macaroni
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3/4 cup grated Cheddar cheese
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1 1/2 pounds ground beef
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1 onion, chopped
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2 cups milk
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3 eggs
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Pinch of salt
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Pinch of pepper