Savory French Onion Casserole - Ohio Eggs

Ingredients

• 3 tbsp of unsalted butter
• 2 – 2.5 pounds yellow onions, thinly sliced
• 1 tsp salt
• 1 bay leaf
• 1 tsp dried thyme
• ½ cup white wine (we recommend Sauvignon Blanc)
• 1 large loaf of sourdough bread cut into 1-inch cubes (best results from toasted or allowing cubes to dry overnight)
• 6 large eggs
• 1 cup heavy cream
• 2 1/2 cups whole milk
• 1 tbsp Dijon mustard
• 1 tsp Worcestershire sauce
• 1 tbsp soy sauce
• Salt and pepper to taste
• 8 ounces grated Gruyere cheese
• 1 tbsp freshly chopped parsley