In medium bowl combine cream cheese, green onion, mayonnaise and bacon.
Cut off thin slice (about ΒΌ inch) from tops of tomatoes; scoop out seeds and pulp; drain. Spoon cream cheese mixture into a small zipper closure food storage bag; snip off corner. Pipe mixture evenly into tomatoes. Garnish with small sprig of parsley, if desired. Refrigerate, covered.
Guacamole Tomatoes:
In blender or food processor, cover and process avocado until smooth. Add cream cheese, lemon juice, salt, dill weed and garlic powder. Cover and process until well blended.
Remove stems from tomatoes. Cut a crosswise cut in top of each; spread apart slightly. Spoon avocado mixture into a small zipper closure food storage bag; snip off corner. Pipe mixture evenly into tomatoes. Sprinkle with dill weed, if desired. Refrigerate, covered.