Preheat your oven to 375 degrees, line a couple baking sheets with parchment paper and set aside. In a bowl, mix together the flour, vanillina and salt, set aside.
In the bowl of a standing mixer fitted with a paddle attachment, cream together the shortening, butter and confectioner sugar until creamy.
Add the eggs and mix until well incorporated. Add the dry mixture and mix until you have a smooth dough.
Place some of the dough in a piping bag that’s been fitted with a large star tip and pipe out little cookies a couple inches apart on the prepared baking sheet.
Bake for about 10 to 15 minutes or until lightly golden. Allow to cool completely before serving.