INGREDIENTS
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Tomato Sauce
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1 onion, peeled and halved
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1 28 ounce can crushed tomatoes
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1/2 cup unsalted butter
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1 teaspoon salt
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Meatballs
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1 pound ground pork
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1 pound ground beef
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1 onion, finely chopped
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2 cloves garlic, minced
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1 cup shredded Parmesan
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1 cup panko
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3/4 cup parsley, finely chopped
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2 tablespoons Worcestershire
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1 egg
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2 teaspoons salt
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1 teaspoon black pepper
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1 pound spaghetti
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Parmesan, to serve