Place parsley, garlic cloves, dried oregano, salt, red pepper flakes, black pepper, and lime juice into the bowl of a food processor and securely place the lid on.
Turn the food processor on high.
Drizzle olive oil through the feed chute as the mixture processes. If you feel that you need more, add 1 tablespoon at a time. Some people like theirs more oily and others prefer to not. Just look at it and see if it's the consistency you like.
Store in an airtight jar in the refrigerator.
Notes
This is great atop grilled flank steak or tossed with sautéed veggies and chicken!