Combine ingredients in a food processor and process until smooth. Scrape sides down a few times ot ensure everything is mixed. Alternatively, if you don't have a food processor, you can finely chop garlic and parsley and whisk together ingredients.
Store dressing in the fridge until needed. It will keep fine for a week at least.
Making the Broccoli Crunch Salad
Chop broccoli into stalks and florets. Peel stalks and cube into 1/4-inch cubes. Chop florets into bite-sized pieces. Add to a large bowl and layer in chopped celery, chopped apple, scallion, peanuts, and crumbled feta.