Preheat oven to 350ºF. Using an electric mixer, beat cream cheese and powdered sugar together in a medium mixing bowl until light and fluffy. Add egg and vanilla; mix well. Set aside. Combine cranberry sauce and chocolate bits in a medium saucepan. Melt over medium heat, whisking occasionally until smooth. Cool slightly. Place tartlet shells on a cookie sheet. Spoon a generous tablespoon of chocolate mixture into each shell. Top with about 1/4 cup of cream cheese mixture. Bake for 12-15 minutes or until the centers are set. Cool completely. Drizzle tops of tartlets with leftover chocolate mixture. Makes 6 tartlets. PER SERVING (1 tartlet): Cal. 484, Total Fat 24grams, Sat. Fat 12grams, Protein 6grams, Carb. 65grams, Chol 77mg, Dietary Fiber 2grams, Sugar 53grams, Vit. A 181RE, Folate 11Ug, Vit. E 1mg, Vit. C 0mg, Sodium 310mg, Pot. 147mg, Iron 1mg, Calcium 37mg, Zinc <1mg