In a large bowl, combine olive oil (1/3 cup), lemon juice (2/3 cup), salt (1 teaspoon) and pepper (1/2 teaspoon).
In a food processor, process cauliflower (2 1/2 cups) until it’s a fine grain, similar to the size of bulgur grain, using 1-second intervals. Place the cauliflower in the lemon juice/olive oil and let it sit white prepping the remaining ingredients.
Pick the leaves from the stems of the parsley (5 bunches). To save time, drag a sharp knife over the top of a parsley bunch while holding the stems, then remove any large stems from the leaves (you won't notice the small stems).
Place leaves into the food processor, and pulse until finely chopped (make sure not to overprocess!).
Add quartered cherry tomatoes (12 Ounces), parsley, and minced red onions (1 small) to the cauliflower bowl, and stir to thoroughly combine.
Taste and adjust seasoning to your liking (I usually add an additional teaspoon of salt). Chill in the fridge for 1 hour-overnight before serving, and enjoy!