Add the mayonnaise, buttermilk, pickled jalapeños, dried parsley, salt, black pepper, garlic powder, onion powder, dill and thyme to a blender or food processor.
Blend for 30-60 seconds, or until the jalapeños are finely blended and the dressing is smooth and creamy. Scrape down sides if needed.
Taste the ranch and add more jalapeños, if you want additional heat. If needed, adjust the salt and seasonings to taste. Refrigerate until ready to serve. The ranch will thicken slightly as it chills.
Notes
Store ranch in an airtight container in the fridge. Best if consumed within one week.