Eggs royale is similar to Eggs Benedict or florentine but uses smoked salmon instead of ham or spinach. Using cold butter rather than warm, melted butter means the sauce takes a few extra minutes ...

Bake the tarts in the oven for about 25 minutes - you may need to turn the temperature down to 180C/350F/Gas 4 for the final 10 minutes. You are looking for a very slight dome on the custard ...