Self-Filled Cupcakes(Originally From Carol Bedner)  
["8 oz. cream cheese, softened", "1 unbeaten egg", "1/3 c. sugar", "1/8 tsp. salt", "1 c. semi-sweet chocolate chips", "1 1/2 c. flour", "1 c. sugar", "1/4 c. cocoa", "1 tsp. baking powder", "1/2 tsp. salt", "1 c. water", "1/3 c. oil", "1 Tbsp. vinegar", "1 tsp. vanilla", "sugar", "chopped walnuts"]
["Combine first 5 ingredients and set aside.", "Sift together the next 5 ingredients in a large bowl.", "Add the next 4 ingredients. Beat until well blended."]
["cream cheese", "egg", "sugar", "salt", "semi-sweet chocolate chips", "flour", "sugar", "cocoa", "baking powder", "salt", "water", "oil", "vinegar", "vanilla", "sugar", "walnuts"]