01 -
In a saucepan over low heat, combine the marshmallows, pumpkin, cinnamon, pumpkin pie spice, and salt. Stir frequently until everything melts together into a smooth mixture.
02 -
Transfer the hot pumpkin mixture to a mixing bowl and let it cool completely to room temperature, about 30 minutes or longer if needed.
03 -
Once cooled, gently fold in the thawed Cool Whip until fully combined. The mixture should become lighter in color and fluffy.
04 -
Pour the pumpkin filling into the graham cracker crust and spread it evenly with a spatula.
05 -
Cover the pie with the crust's lid and refrigerate for at least 8 hours, but preferably overnight, to set properly.
06 -
When ready to serve, top with whipped cream if desired. You can either cover the entire pie or add a dollop to individual slices.