Preheat oven to 425° F. Butter 4 (6-ounce) custard cups or souffle dishes. Place on baking sheet.
Microwave chocolate and butter in large microwavable bowl on HIGH 1 minute or until butter is melted. Whisk until chocolate is completely melted. Stir in wine, vanilla and confectioners' sugar until well blended. Whisk in eggs and yolk. Stir in remaining ingredients. Pour batter evenly into prepared custard cups.
Bake 13 to 15 minutes or until sides are firm but centers are soft. Let stand 1 minute. Carefully loosen edges with small knife. Invert cakes onto serving plates. Sprinkle with additional confectioners' sugar. Serve immediately.
Make Ahead: The chocolate mixture can be prepared up to 10 hours ahead of time. Pour the batter into prepared custard cups; cover with plastic wrap and refrigerate. Bring to room temperature for 30 minutes before baking.
Nutrition information per serving Calories: 567 Fat: 35 g Cholesterol: 219 mg Protein: 6 g Sodium: 209 mg Carbohydrates: 57 g Fiber: 2 g