"These French onion meatballs are a delicious twist on a classic! With a savory sauce and melty cheese, they're such a delicacy...."
INGREDIENTS
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1 pound lean ground beef (85/15 or 90/10)
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1/2 cup Italian seasoned breadcrumbs
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1/4 cup milk
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1 large egg
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1/4 cup grated Parmesan cheese
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2 cloves garlic, minced
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1 teaspoon fresh thyme leaves
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1 teaspoon salt
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1/2 teaspoon black pepper
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2 tablespoons olive oil, for browning
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2 large yellow onions, thinly sliced
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2 tablespoons butter
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1 tablespoon olive oil
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1/2 teaspoon salt
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2 cloves garlic, minced
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1 tablespoon all-purpose flour
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1/4 cup dry sherry or white wine
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2 cups low-sodium beef broth
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1 teaspoon fresh thyme leaves
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1 cup shredded Gruyère cheese
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1/2 cup shredded mozzarella cheese