01 -
Preheat the oven to 350°F (175°C).
02 -
Whisk together flour, baking powder, salt, and ground cinnamon in a medium bowl until thoroughly combined.
03 -
In a separate large bowl, beat the softened butter, granulated sugar, and brown sugar together until the mixture is light and fluffy.
04 -
Add the egg and vanilla extract to the butter mixture and continue to mix until smooth and fully incorporated.
05 -
Gradually fold the dry mixture into the wet mixture, mixing until a soft dough forms.
06 -
In a small bowl, combine the 1/2 cup packed brown sugar with 2 teaspoons ground cinnamon and set aside.
07 -
On a lightly floured surface, roll the dough out into a rectangle approximately 1/4 inch thick. Evenly spread the cinnamon-sugar filling over the dough.
08 -
Starting from the long edge, roll the dough tightly into a log. Slice the log into equal portions using a sharp knife.
09 -
Transfer slices to a parchment-lined baking sheet. Bake in the preheated oven for 30 to 45 minutes, or until the edges are golden and cookies are set.
10 -
Remove the cookies from the oven and allow them to cool on a wire rack before serving.