1 c. butter
2 c. sugar
4 eggs
3 tsp. vanilla
2 c. flour
1/2 tsp. salt
2 c. nuts
2 oz. melted baking chocolate

Cream butter gradually. Add sugar and beat until fluffy. Beat in eggs and vanilla. Sift together flour and salt, gradually add to creamed mixture. Blend in nuts. Divide dough in half. Add chocolate to 1/2 and spread white layer in bottom of pan. Then spread chocolate layer on top. Use a 13 x 9 x 2 inch buttered pan. Bake at 350 degrees for 30 minutes.

FROSTING:

3 tbsp. flour
1/2 c. milk
1/2 c. butter
1/2 c. sugar
1 tsp. vanilla

In heavy saucepan, slowly blend flour and milk. Cook over low heat, stirring constantly until paste thickens. Cool thoroughly. Cream butter, sugar and vanilla in small bowl. Gradually add paste and beat at high speed for 5 minutes.