Buttermilk Ranch Salad Dressing (From Scratch!) | CDKitchen.com

Combine the mayonnaise, parsley, onion, garlic, salt, pepper, and cheese in a bowl. Stir well to combine. While stirring, add the buttermilk and mix until incorporated. Cover the bowl and place in the refrigerator for 2 hours before serving. Store leftovers in a covered container in the refrigerator for up to 3 days.