Preheat the oven to 170°C and line three 6" baking tins.
In a stand mixer combine sifted flour, sugar, baking powder, and salt.
In a separate bowl combine the water, vanilla bean paste and oil.
Add the wet ingredients to the dry ingredients and mix until well combined.
Divide the batter evenly between the baking tins.
Bake for about 20-25 minutes or until golden and a toothpick inserted into the cake comes out clean.
Allow the sponges to cool completely before assembling.