1 TBSP baking powder
1 tsp salt
1/4 tsp baking soda
1/4 cup vegetable oil
3/4 cup buttermilk
8 TBSP butter, softened
3/4 cup granulated sugar
1 tsp cinnamon
Combine flour, baking powder, salt, and baking soda in a medium sized bowl and mix well. Stir in vegetable oil. Add buttermilk and stir just until blended
Knead the dough on a lightly floured surface until smooth. Roll dough into a 15"x8" rectangle.
Preheat the oven to 400 degrees. Grease a 9-inch round baking pan lightly.
Spread butter over the dough. Combine granulated sugar and cinnamon in a 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 the slice, cut side up, in prepared baking pan. bake until lightly browned, about 15 to 20 minutes. Remove from oven. Cool slightly and serve warm.