01 - In a medium bowl, whisk together the flour, baking powder, and salt until evenly combined.
02 - In a large bowl, beat the softened butter and granulated sugar with an electric mixer until light and fluffy, approximately 2 to 3 minutes. Add the egg, orange juice, vanilla extract, and orange zest, then continue mixing until the mixture is smooth and well incorporated.
03 - Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until a soft, cohesive dough forms. Flatten the dough into a disk, wrap tightly in plastic wrap, and refrigerate for at least 1 hour until firm.
04 - In a small bowl, combine the softened cream cheese, powdered sugar, orange zest, orange marmalade, and vanilla extract. Stir until completely smooth and free of lumps. Set aside.
05 - Preheat the oven to 350°F. Line two baking sheets with parchment paper and set aside.
06 - On a lightly floured surface, roll the chilled dough out to an even 1/8-inch thickness. Using a 3-inch round cookie cutter, cut out as many circles as possible. Gather scraps, re-roll, and repeat.
07 - Place approximately 1 teaspoon of the creamsicle filling in the center of each dough circle. Gently fold the edges upward to form a triangle, pinching the three corners firmly to seal and create the traditional hamentaschen shape.
08 - Place the shaped cookies on the prepared baking sheets, spacing them about 1 inch apart to allow for slight spreading.
09 - Bake for 12 to 14 minutes, or until the bottoms and edges are lightly golden. Allow the cookies to cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely.