Cut parchment paper to 10" x 14" size. Split open the top of the plastic bag and transfer the rice square to parchment paper. Keep the plastic sheet on top.
If the rice square is too fragile, use two cutting boards to transfer the rice square. Place one cutting board under the plastic bag with rice square and place the parchment paper over. Place the other cutting board over the parchment paper, then flip the boards so that the plastic bag and rice square is on top of the parchment paper. This can be also done using 2 baking sheets.