1In small microwavable bowl, microwave whipping cream and chocolate chips uncovered on High 30 to 60 seconds; stir until smooth. Refrigerate about 1 hour, stirring occasionally, until thick.
2Heat oven to 350°F (or 325°F for dark or nonstick pans). Place paper baking cup in each of 18 large (2 3/4x1 1/4-inch) muffin cups. Make cake mix as directed on box, using water, butter and eggs. Place 1/4 cup batter in each muffin cup. Spoon 1 tablespoon cold chocolate mixture on top of batter in center of each cup.
3Bake 18 to 20 minutes or until top springs back when lightly touched. Cool 1 minute; carefully remove from muffin cups to cooling racks. Cool 5 minutes before serving.
4To serve, remove paper baking cup from each warm cupcake; place on individual dessert plate. Sprinkle each with powdered sugar; garnish with raspberries. To serve leftover cupcakes, rewarm by removing paper baking cups and microwaving on plate uncovered on High 10 to 15 seconds.