Combine Unsalted Butter, Powdered Sugar-Free Sweetener, and Heavy Whipping Cream in a saucepan over medium heat, stirring continuously until smooth and melted for about 3-5 minutes.

Increase heat until the mixture begins to boil gently. Stir intermittently, noticing small bubbles and froth forming, for about 5-7 minutes.

Reduce heat to low and simmer undisturbed for 25-30 minutes, stirring occasionally until thick enough to coat the back of a spoon.

Remove from heat and let cool at room temperature for about 30 minutes.

Transfer to an airtight container and refrigerate for at least 2 hours, preferably overnight, to set.

Stir gently before using in recipes or as a creamer.