Sieve flour , coco powder thrice and keep it aside.
In a mixing bowl add melted butter, powdered sugar , yoghurt , baking powder and baking soda. Whisk well to make a smooth mixture.
Next pour dry ingredient into wet mixture laddle by laddle. Use cut and fold method to combine. Add milk as required to make a smooth bater.
Add 1 tbs of sprig vanilla essence and mix.
Now preheat the pan with salt and stand for 10 minutes.
Meanwhile grease the tin with oil and add dust flour. Pour the bater and place into pan.
Bake the cake for 45 minutes. Then check with fork.
When the cake is preparing, lets melt the chocolate.
Cut the dark cocolate and Cadbury chocolate into pieces and melt it in double boiler method.
When cake is done cool it down and demould it. Cut the cake into two laye rs and trim the upper part of cake.
Now apply sugar syrup in each layers. Next spread the melted chocolate evenly in middle layer then place another cake layer.
Next apply the melted chocolate on the top evenly. Then apply on the corners.
Now use a spatula to smooth the texture. Stick the oreo biscuit onthe wall of cake properly.
Drcorate the cake with cadbury pieces and sprinkles.
Refregerate the cake for half an hour.
Take it out and slice the cake.