preheat oven to 400 grease a 9-inch round pan lightley

combine flour,baking powder,salt and baking soda in a med bowl and mix well. stir in veg oil. Add buttermilk and stir just until blended.

knead the dough on a lightly floured surface until smooth. Roll dough into a 15 by 8 inch rectangle.

spread butter over the dough. Combine sugar and cinnamon in small bowl and mix well. Sprinkle over butter. Roll up rectangle, jelly roll fashion, starting from one long side. Pinch seam to seal.

Cut the roll into 1 1/2- inch slices. Arrange slices cut side up bake until lightly browned about 15 to 20 min.