Heat the oven to 300 degrees F. Line a large baking sheet with parchment paper or a silicone mat.
In a mixing bowl, combine all dry ingredients and make a well in the center.
Add the oil, syrup and vanilla to the well, then mix everything together to form a soft dough.
Empty the mixture onto the baking sheet and shape it into an 8 inch circle.
Bake on center rack for about 12-14 minutes or just until cookies looks less shiny and appears set.
Let cool directly on the baking sheet. When ready to decorate, use a cake lifter to put it on your decorating surface. This cookie cake freezes well.