Turkey Hill Dairy | Onion Bake Recipe

Ingredients

• 3 tbsp. unsalted butter
• 2 large yellow onions, thinly sliced
• 2 large red onions, thinly sliced
• 4 medium leeks, thinly sliced
• salt (to taste)
• freshly ground black pepper (to taste)
• 1 1/2 cups grated Havarti
• 2 5-oz. pkgs. Boursin with herbs, crumbled
• 1 1/2 cups grated Gruyère
• 1/2 cup dry white wine