Line an 8×8-inch baking pan with parchment paper and set aside. Add the powdered sugar to a large mixing bowl and set aside.

Remove from heat, then stir in the peanut butter and vanilla extract until smooth and creamy. Pour the hot peanut butter mixture into the bowl with the powdered sugar, then beat with an electric mixture until completely smooth.

Store them in an airtight container for up to 2 weeks in a cool area.