Step 1.  Preheat the oven to 180 °C / 350 °F. Butter a square or rectangular pan.
Step 2. Place butter, peanut butter, cream cheese and sweetener in a medium mixing bowl.
Step 1.  Preheat the oven to 180 °C / 350 °F. Butter a square or rectangular pan.
Step 2. Place butter, peanut butter, cream cheese and sweetener in a medium mixing bowl.