While the ice cream is churning, make the hot fudge.
To make the hot fudge sauce, place the heavy cream, sweetener in a medium pot over high heat. Once hot, remove from the heat and add the chopped chocolate. Stir until chocolate is melted. Stir in the vanilla. Taste and adjust sweetness to your liking. Set in fridge to cool for a few minutes.
To make whipped cream, place 1 cup heavy cream in a whipped cream canister (click HERE to find) and add 2 tablespoons of Swerve confectioners or 1/4 teaspoon of stevia glycerite to sweeten. Seal and shake well. Spray on top of hot fudge sundae and top with Pili Nuts for garnish.