"A hearty casserole with beef, Parmesan cheese, tomatoes layered with sauce and macaroni...."
INGREDIENTS
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1 (16 ounce) package elbow macaroni
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1 tablespoon extra virgin olive oil
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1 clove garlic, minced
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1/2 large onion, diced
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1 pound lean ground beef
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1 (14.5 ounce) can peeled and diced tomatoes
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ground black pepper to taste
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1 teaspoon dried oregano
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6 ounces grated Parmesan cheese, divided
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1 tablespoon butter
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1 tablespoon all-purpose flour
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1 cup milk
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1 egg yolk