French Onion Soup With Cheesy Croutons - Fresh-Pressed Olive Oil

Ingredients

• 5 tablespoons extra virgin olive oil
• 5 pounds yellow onions, peeled and sliced into roughly ½” rounds
• Coarse salt
• Sugar
• 1/2 cup cognac
• 8 cups beef stock
• 1 cup dry vermouth
• Freshly ground black pepper to taste
• 10 baguette slices, about ½” thick, cut into cubes
• 2 tablespoons extra virgin olive oil
• 1/2 cup grated gruyere cheese