Prepare the Jell-O
Follow the package instructions to make the lime Jell-O.
Reserve ⅓ cup of the prepared Jell-O mixture for later use.
Set the Base Layer
Pour the remaining Jell-O evenly into 4-5 dessert glasses or small cups.
For a fun effect, tilt the glasses in a muffin tin before refrigerating to set at an angle.
Chill until the Jell-O is firm, about 2-4 hours.
Make the Creamy Layer
In a separate bowl, mix the reserved ⅓ cup of Jell-O with the Cool Whip, stirring until smooth.
Keep refrigerated until ready to assemble.
Assemble the Parfaits
Once the Jell-O base is fully set, evenly distribute the whipped topping mixture over each glass.
Optionally, add extra whipped topping, meringue cookies, or festive sprinkles for decoration.
Final Chill and Serve
Refrigerate until ready to serve, then enjoy this refreshing and colorful dessert!