Pre-heat the oven to 170C/325F/Gas 3.
Have a large mixing bowl, place the flour and baking powder inside a sieve and sift it in to the bowl, holding the sieve high allow it a great airing as the story goes lower. Now whatever you do is just add the rest of the cake elements (except the icing sugar) towards the bowl and, provided the butter is actually soft, just use by having an electric hands whisk and whisk everything together til you have an even, well-combined mixture, that will take about about a minute. If you don't come with an electric hands whisk, use a wooden spoon, using a bit more effort. What you should now finish track of is really a mixture that drops off a spoon whenever you provide a tap along the side of the bowl. Whether it appears a tad too stiff, give a little water and blend again.
Now divide the mix backward and forward tins, level it and put the tins around the center shelf from the oven. The cakes will require 30-35 minutes to prepare, but don't open the oven door until half an hour have passed.
To check if the cakes are cooked or otherwise, touch the center of every gently having a finger: whether it leaves no impression and also the sponges spring back, they're ready.
Next, take them off in the oven, then wait about 5 minutes before turning them out onto a wire cooling rack. Carefully remove the bottom papers, that is simpler if one makes a fold within the paper first, then pull it lightly away without attempting to lift them back. Now leave the sponges to obtain completely cold, adding the filling.
To create this, first slice the fervour fruit into halves and, utilizing a teaspoon, scoop all of the flesh, juice and seed products right into a bowl.
Next, in another bowl, mix the mascarpone, fromage frais, sugar and vanilla flavoring, utilizing a balloon whisk, the fastest method to blend them altogether. Next, fold within two-thirds from the passion fruit.
Now put the first sponge cake around the plate or cake stand you will serve it on, then spread half the filling regarding this, drizzle the relaxation from the passion fruit over that, then spread the rest of the filling within the passion fruit. Lastly, put the other cake on the top, press it lightly to ensure that the filling oozes out in the edges, then dust the top after some sifted icing sugar.