Combine both flours, sugar, baking powder, baking soda, salt, and cinnamon in the bowl of a food processor and pulse several times. Add the butter and pulse until the mixture resembles cornmeal. Add the molasses, milk, and vanilla extract, and process until the dough forms a ball, approximately 1 minute. Press the ball into a 1/2-inch thick disk, wrap in plastic wrap, and refrigerate for 30 minutes.