Place the basil leaves, pine nuts, and walnuts into a food processer. Pulse several times.Place the basil leaves, pine nuts, and walnuts into a food processer. Pulse several times.
Add in the remaining ingredients (parmesan cheese, olive oil, garlic cloves, avocado, salt, and pepper).
Pulse for a minute and scrape down the side of the food processor as needed.
Adjust the seasoning and/or add more olive oil for a thinner texture.
Toss with pasta for a quick sauce, or use as spread on toast/crackers.