3/4 can sweetened condensed milk, 10.5 oz (standard can is 14 oz) 1 cup 2 sticks or 226 grams of butter, at room temperature 3/4 package, 6 oz of 8 oz cream cheese, at room temperature 8 oz Cool Whip, thawed in refrigerator
In the bowl of an electric mixer, on medium/high speed, whisk together butter and condensed milk on medium
speed until it is a thick cream (5 minutes). It should be the consistency of frosting. It thickens as you mix it.
On medium/low-speed, mix in cream cheese, one tablespoon at a time until mixed through and not lumpy.
Reduce speed to low and mix in cool whip just until mixed through.
Use immediately or refrigerate until ready to use.