This is the recipe I use but add the Ranch salad dressing package. Creamy Avocado Dressing (aka Guacamole Buttermilk Dressing) - A cool and creamy avocado dressing with tangy buttermilk, fresh cilantro and lime juice along with some spicy jalapeno pepper.
Made Will make again and again. Absolutely delicious, although I didn't wait the hour for it to thicken! Next time you serve a southwest dinner make this easy light ~ creamy taco salad dressing for your salad. Also you could use in place of sour cream.