In a large mixing bowl, cream together the butter and powdered sugar until smooth and fluffy. Add in the vanilla extract and the egg, mixing well until fully incorporated and silky.
In a separate bowl, sift together the all-purpose flour, almond flour, salt, baking powder, and creamer powder to ensure even distribution. Gradually pour the dry ingredients into the wet mixture, stirring just until combined. Avoid overmixing to maintain a tender texture. Gather the dough into a dome shape, place it inside a ziplock bag, and refrigerate for at least 1 hour to firm up.
Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper.
Divide the chilled dough into four equal portions. Roll each portion out to about ¼ inch thickness. Using a sharp knife, cut the dough into strips approximately ½ inch wide. Carefully transfer the strips onto the prepared baking sheets, keeping each stick as straight as possible. A straight-edged ruler can help guide the lines neatly. Leave about ½ inch space between each stick to allow for even baking.
Bake the cookie sticks for 12 to 14 minutes, or until they are set and lightly golden around the edges. If using a smaller or darker-colored baking tray, reduce the baking time slightly to prevent overbrowning. Allow the sticks to cool completely on a wire rack.