Combine butter and sugars in mixing bowl. Beat until creamy and fluffy. Add egg yolk, vanilla, flour, cardamom and salt. Mix well to form a soft dough,.
Spread mixture in ungreased 10X15 baking pan. Brush surface with beaten egg white. Sprinkle evenly with nuts.
Bake at 275° for one hour.
Butter Frosting
In skillet, melt 1½ tsp butter until butter browns slightly. Remove from heat.
Beat in 1 cup powdered sugar and ½ tsp vanilla extract. Add enough milk to bring frosting to drizzling consistency.
Notes
These cookies, crisp and crunchy with nuts, have a tough of the exotic because of the spicy addition of ground cardamom. The recipe makes a large batch of delicious and esy to prepare cookies for the holiday season as well as for other times of the year. This recipe is from the kitchen of Sally Bryant.