Heat sugar and oil in a sauce pan using low heat. Blend the mixture until the sugar turns golden. Remove from heat and transfer sugar mixture to a mixing bowl. When cool, add the egg to the sugar mixture. Blend in cake flour, baking soda, and baking powder and mix into a dough. Divide the dough into small parts and shape them into cookies on a baking tray. Spread pistachio kernels on the top. Bake the cookies at 400⁰ F for approximately 15 minutes until golden.