French Onion Mac and Cheese Recipe

Ingredients For French Onion Mac and Cheese Recipe

• 6 tablespoon Unsalted butter, divided
• 3 Onions, thinly sliced
• 1 teaspoon Chopped fresh thyme, or 1/2 teaspoon dried, plus more leaves for serving
• Kosher salt and freshly ground pepper
• 0.25 cup Dry white wine, such as sauvignon blanc
• 1 tablespoon Dijon mustard
• 1 teaspoon Crumbled beef bouillon
• 12 ounce Medium shell pasta
• 0.33000000000000007 cup Unbleached all purpose flour
• 3 cup Whole milk
• 0.33000000000000007 pound Gruyere, grated
• 0.33000000000000007 pound Fontina, grated
• 0.33000000000000007 pound Emmentaler, grated
• 3 cup Torn rustic bread, or 12 slices baguette