Using a fork, vigorously mix Cool Whip, cream cheese and Splenda until smooth and well blended.
Evenly distribute mixture into 10 sections of an ice cube tray. Tap tray firmly on the counter a few times to get mixture to settle flat. Top each with a teaspoon of chocolate syrup. Tap tray to again to settle. Place tray in freezer until bites are solid - at least 2 hours.
Once frozen, bites should pop out easily. If not, run the bottom of the tray under the faucet for a few seconds to loosen them.