French Onion Pasta

Bahan-bahan (4 porsi)

• 3 tablespoons unsalted butter
• 2 large onions (thinly sliced)
• ¼ teaspoon kosher salt (plus additional to taste)
• ¼ teaspoon ground black pepper
• 4 cloves garlic (minced (about 4 teaspoons))
• 1 tablespoon chopped fresh thyme
• ½ cup dry white wine (such as Sauvignon Blanc)
• 1 tablespoon sherry vinegar
• 1 tablespoon Worcestershire sauce
• 1 teaspoon Dijon mustard
• 8 ounces rigatoni (or similar tube-shaped pasta)
• 4 cups low-sodium beef broth
• 1 cup shredded gruyere cheese (about 4 ounces)
• ¼ cup grated Parmesan cheese
• ¼ cup half-and-half (or heavy cream)