Beat the whipped cream to stiff peaks in a large bowl.
In another large bowl, combine the sweetened condensed milk, toffee pieces, pumpkin puree and pumpkin pie spice.
Fold in the cream.
Transfer to a covered container and freeze until the mixture has hardened, at least 6 hours.
Notes
Nutrition information provided as an estimate only. Various brands and products can change the counts. Any nutritional information should be used as a general guide.