Mix all the dry ingredients in a bowl (flour, coco powder, baking powder and pecan nuts).

In a separate bowl, mix the eggs with the sugar and then, mix the oil to it.

In another bowl, add the bitter chocolate chips and butter and microwave it for 30 second to melt it.

Now, add the egg mix to the dry ingredients and whip it properly.

Next, add the melted chocolate to it and keep whipping till it's smooth.

At last, add the vanilla extract and mix it to make sure there are no air holes.

Grease your baking pan with some oil and then, dust it with flour.

Pour half of the content in the baking pan and then add the white chocolate chips. Then, pour the rest of the content in the pan.

Bake it at 375 F for about 55 minutes. Poke with a tooth pick or a chop stick to make sure it comes out clean.

It was very tasty, moist and delicious. Nothing can beat a plain and simple chocolate cake! Happy Birthday to Me :)