- Mix the flours with the baking powder and the icing sugar. Into a other bowl, mix together oil, water and the lemon zest. Pour the liquids into the dry ingredients and knead until you obtain a smooth ball.
- Roll out the dough between two sheets of parchment paper.
- Transfer over a round baking tray (20cm) and spread the pastry shell with the jam. With the extra dough, make strips to create a decoration.
- Bake at 180 degrees for about 25min.