Step 1- Mix the Buttermilk Substitute
Combine the plant milk and apple cider vinegar in a small bowl and let it sit for a couple minutes while you gather the rest of your ingredients.
Step 2- Blend Everything Together
Measure all the ingredients and add them to a blender. Blend for about 30 seconds, or until the consistency turns nice and smooth, with no large basil pieces remaining.
Step 3- Store and Chill
Store the dressing in an airtight container in the refrigerator.
That's genuinely the entire process. Two simple steps, and you've got a dressing that tastes far richer and more savory than anything from a bottle.