French Butter Cake

Directions

1. 1
   Heat oven to 350 degrees F.
2. 2
   Cream butter or margarine in bowl. Beat in egg yolks. Mix well.
3. 3
   Sift flour and salt onto board or into large bowl. Make a well in the center. Put sugar and egg-yolk mixture in well. Mix with flour gradually until blended.
4. 4
   Mix in vanilla and orange liqueur or rum. Knead dough well.
5. 5
   Turn into 9x9x2-inch pan. Spread evenly with spatula. Brush with beaten egg.
6. 6
   Bake 1 1/4 to 1 1/2 hours. Cool in pan. Cake keeps several weeks wrapped in foil.