To level bottoms of tomatoes, cut thin slice from bottom of each.
Starting at stem end and using small spoon or melon baller, carefully hollow out each tomato, leaving ⅛-inch shell.
Invert tomato shells on paper towels to drain.
In small bowl, combine cream cheese and mayonnaise; blend well.
Stir in cucumber, onion and dill; mix well.
Fill tomato shells with cream cheese mixture; place on serving platter or tray.
Cover loosely; refrigerate at least 2 hours or up to 24 hours before serving.
Store in refrigerator.
Notes & Wine Advice
To reduce the fat in each serving of these tomatoes by about 1 gram, use nonfat cream cheese and reduced-fat mayonnaise.
To easily fill the tomatoes, place the cream cheese mixture in a plastic squeeze bottle. Snip off three-quarters of the bottle’s tip with a kitchen scissors. Squeeze the cream cheese mixture into the tomato shells.