1. Cut top off each tomato; carefully scoop out pulp. Reserve pulp for another use. Invert tomato shells onto paper towels; let drain 30 minutes.
2. Combine cream cheese and dressing, stirring well. Add Canadian bacon and next 4 ingredients; stir. Spoon mixture evenly into tomato shells, or pipe into shells using a decorating bag fitted with a large round tip. Garnish with parsley, if desired.
carbo rating: 1