Gather the ingredients - * Graham cracker crust * Pumpkin pie * Instant vanilla pudding * Cinnamon * Pumpkin pie spice * Half-and-half * Whipped topping
In a large bowl, stir together the pumpkin puree, vanilla pudding mix, cinnamon, and pumpkin pie spice.
Add the half-and-half and stir until smooth.
Fold in 2 cups of the whipped topping, then transfer the pumpkin mixture to the graham cracker crust.
Allow the pie to sit in the fridge for at least 3 hours, then top with the remaining whipped topping and a sprinkle of cinnamon right before serving.