4 sq. unsweetened chocolate
1/2 c. butter
1 lb. confectioners sugar
1 egg
1/4 c. sweetened condensed milk
1 tsp. vanilla
1 c. chopped nuts (optional)

Melt chocolate and butter together. Combine all other ingredients and mix well. Stir in melted butter and chocolate. Mix well and put in greased 8 x 8 inch pan. Chill in refrigerator until firm. Makes about 1 1/2 pounds.