|Cubed watermelon||3 Cup (48 tbs)|
|Triple sec/Orange flavored liqueur||1⁄4 Cup (4 tbs)|
|Lemon juice||3 Tablespoon|
|Sugar||2 1⁄2 Tablespoon|
Combine watermelon, liqueur, lemon juice, and sugar in container of an electric blender; process until smooth.
Pour mixture into an 8-inch square pan; cover and freeze until firm.
To serve, spoon frozen mixture into individual dessert dishes; garnish with watermelon cubes, if desired.