In the bowl of a food processor, combine the beans, parsley, lemon juice, garlic and salt. Pulse to combine and then while food processor is running, stream in the olive oil until the hummus is smooth. Store covered in the refrigerator until ready to serve.
Hummus Topping
Combine the minced olives, parsley, feta cheese, olive oil and lemon zest. Top hummus with it right before ready to serve.