Chocolate Thumbprints(1993 Brownie Bake-Off Winner)  
["1 oz. unsweetened chocolate", "1/2 c. margarine", "1/2 c. sugar", "1 egg, separated", "1/4 tsp. vanilla", "1 (6 oz.) pkg. chocolate chips", "1 c. flour", "1/4 tsp. salt (optional)", "3/4 c. finely chopped nuts"]
["Melt chocolate over hot water; cool.", "Cream the margarine. Add melted chocolate.", "Add sugar, egg yolk and vanilla; mix thoroughly.", "Sift flour and salt; add to mixture.", "Slightly beat egg white with fork.", "Roll dough into balls (about 1 teaspoon per ball).", "Dip in egg white to coat.", "Roll in nuts.", "Place about 1 inch apart on ungreased cookie sheet.", "Make thumbprint in each gently.", "Bake at 350\u00b0 for 10 to 12 minutes.", "Take out immediately. Place 3 to 4 chocolate chips in thumbprint.", "When melted, spread evenly."]
["unsweetened chocolate", "margarine", "sugar", "egg", "vanilla", "chocolate chips", "flour", "salt", "nuts"]