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.
Ina Garten's Green Goddess Dressing 1 cup good mayonnaise 1 cup chopped scallions 1 cup chopped fresh basil juice of 2 lemons 2 cloves garlic 1 teaspoon salt 1 teaspoon ground black pepper 2 anchovy fillets 1 cup sour cream Place the mayonnaise, green onions, basil, lemon juice, garlic, salt, pepper, and anchovies in a blender, and blend until smooth. Add sour cream, blending until just incorporated. Use immediately, or store in the refrigerator for up to 3 weeks.