For the tiramisu without egg with shot Grand Manier put in a bowl with the orange juice.
Mix well mascarpone, vanilla sugar and sugar, fold whipped cream (not too stiff) into the mixture.
Dip the biscuits in the orange juice mixture, place in a large baking dish and spread the mascarpone over the top. Alternate layers of biscuits and mascarpone.
Finish with mascarpone, sprinkle with cocoa powder, chill overnight and serve.