Add the cilantro, parsley, avocado flesh, lime zest and juice, garlic, jalapeno, onion and bell pepper to the bowl of a food processor and pulse 4 or 5 times until finely chopped. With the motor running, drizzle in the olive oil and process until completely smooth. Adjust the consistency with up to 4 tablespoons water if needed. Taste and season with salt and pepper. Transfer to a bowl and serve immediately. A perfect addition to a beautifully seared hanger steak.