Preheat the oven to 350°F and line two baking sheets with parchment paper.
In a large mixing bowl, cream the butter and powdered sugar until light and fluffy, about 3 minutes.
Add the egg, vanilla extract, salt, almond extract, and scraped vanilla bean, mixing until fully combined.
Add the flour and cream of tartar and mix by hand just until the dough comes together.
Cover and refrigerate the dough for at least 30 minutes, preferably overnight.
Roll the chilled dough to ¼-inch thickness on a lightly floured surface.
Cut into shapes using cookie cutters and place on prepared baking sheets.
Bake for 10–12 minutes, until cookies are set but not browned.
Cool completely on sheets of foil or a wire rack before frosting.