Twice-baked three cheese soufflés - Penguin Books Australia

Ingredients

• 90g butter, plus extra for greasing
• 1 small brown onion, finely chopped
• 1 tablespoon finely chopped thyme leaves
• ½ cup (75 g) plain flour
• 400 ml milk
• 2 tablespoons thickened cream, plus 1 ½ cups (375 ml) extra
• 90 g parmesan, grated
• 50 g Gruyere cheese, grated
• 50 g cheddar cheese, grated
• 3 egg yolks
• salt
• ground white pepper
• 4 eggwhites
• ¼ cup finely chopped
• Chives