Preheat the oven to 375 degrees.

In a large mixing bowl, cream together butter, sugar and salt. Beat until light and fluffy. Add vanilla and eggs one at a time, continuously beating.

Gradually add flour and cocoa powder, beating until well incorporated.

Place dough in Cookie Press with desired disk. Press dough out onto an ungreased baking sheet.

Bake for 8 to 10 minutes or until the cookies are golden brown on the edges. Rotate baking sheet halfway through baking time.