Step by step

Beat the egg yolks with the sugar

Tips
This recipe is really easy, and it is easily within the capability of less experienced cooks. A little advice: it is better if served cold, so keep it in the fridge until you serve it.
Trivia
Mascarpone is technically a ‘cheese’, and has one of the highest levels of fat of any typical ingredient. So be careful if you are overweight. Limit your intake of cakes and other desserts containing mascarpone.