Cold Dough Cookies

Directions

1. 1
   Combine flour, butter and Crisco and crumb the mixture as you would for pie crust.
2. 2
   Add egg yolks to top of flour mixture (do not mix yet; wait until ingredients are in the mix.)
3. 3
   Add 1/2 cup sour cream to flour mixture.
4. 4
   Add cake of yeast, 1 tablespoon sugar and vanilla to remaining sour cream in its container.
5. 5
   Mix until yeast is dissolved.
6. 6
   Add yeast mixture to flour mixture and stir by hand until dough is soft.
7. 7
   Place dough in airtight container overnight (covering dough with plastic bag works well.) Divide dough into 5 parts and add flour and plenty of sugar.
8. 8
   Roll with rolling pin to 1/8-inch thick (very thin); cut into triangles and add filling to wide section of triangle and roll as you would crescent rolls.
9. 9
   Roll in sugar and bake on ungreased cookie sheet at 350° for 20 minutes.