Prepare the dry ingredients: sift flour, starch, cocoa and baking powder. Add salt, mix everything.
To the softened butter add the egg, powdered sugar and vanilla sugar. Mix with a whisk or mixer into a smooth homogeneous mass.
Mix the butter mixture with the dry and knead the soft dough. Divide it into two parts, hands form a flat cake. Wrap in plastic wrap or plastic bag and send in the refrigerator for at least half an hour.
For the cream, melt the white chocolate in the microwave or in a water bath. Add the cream cheese at room temperature and vanilla on the tip of the knife. Mix well. Transfer to a pastry bag and send in the refrigerator to cool slightly. If there is no pastry bag, you can put it in a tight plastic bag and then cut off the tip or spread just with a spoon.
Remove from the refrigerator one part of the dough, spread on parchment paper, cover with a second piece of parchment and thinly roll out. The dough crumbles, so it is easier to roll it out.
We select the cutting approximate in size to the original liver, I took a glass and squeeze out the cookies. Transfer to a baking sheet covered with parchment.
If desired, you can squeeze on the blanks of cookies to give similarity to the original. To do this, I took the original cookies and squeezed a few cookies them, but it is not very convenient to do. Still took lid firmly from conventional plastic the bottle with small pattern and squeezed out with its help. I liked it better that way.
Bake cookies in a preheated 180 degree oven for 10 minutes. But you look after your oven, it may take a little more or a little less. ready cookies leave to cool completely.
Take one half of the cookies, squeeze out the cream and cover with the other half. Our Oreo is ready! Serve to tea and enjoy! Bon appetit!