Double Decker Pastry - cooking recipe

Ingredients

5 c. flour
1 c. sugar
4 tsp. baking powder
2 tsp. baking soda
1/2 lb. butter or margarine
2 Tbsp. vegetable shortening
4 egg yolks
1/2 pt. sour cream
1 tsp. vanilla
pinch of salt
10 oz. ground nuts (walnuts or pecans)
1/2 c. sugar
prune filling or thick jam

Preparation

Sift together flour, sugar, baking powder and soda and salt. Add shortening.
Add egg yolks, sour cream and vanilla.
Blend until dough forms.
Divide into 3 portions.
Roll between waxed paper as for jelly roll.
Remove paper.