Preheat oven to 400 degrees F. line two baking pans with parchment paper.
Combine Truvia® natural sweetener and cinnamon in a small bowl. on a lightly floured surface, roll out the pastry dough into a large rectangle, about 15 by 12 inches. use a pastry brush to spread the butter all over the pastry.
Sprinkle the cinnamon mixture evenly over the pastry. roll the pastry inward from the outsides of the two long ends of the rectangle (like a scroll) until they meet in the middle. Brush the pastry with the water where it meets to hold together.
Slice the pastry crosswise into 14-inch palmiers and lay them on the prepared baking sheets. Bake until they puff and turn evenly golden brown, about 15 minutes. Cool and serve at room temperature.