1. Crust: Cream together butter and cream cheese, and cut in flour.
2. Chill 1 hour.
3. Shape into balls and place into little cupcake pans.
4. Form a cup tart.
5. Filling: Beat together egg, sugar, cinnamon, vanilla, salt, and butter until smooth.
6. Divide pecans in half.
7. Place 1 pecan in each cup of crust, then add 1 teaspoon of filling into each cup almost to the top.
8. Add another pecan. Bake at 325 degrees for 25 minutes.