1/2 C butter, unsalted, at room temperature
1/2 C Philadelphia cream cheese
1/4 C sour cream, cold
1/4 C Cool Whip, cold
Whip butter and cream cheese together on medium high speed until well blended.
Add sour cream and Cool Whip and whip again until stiff peaks form.
Serve right away or refrigerate until use.
Match made in Heaven:
Here is the one I use: