Add the walnuts to a dry saute pan and bring heat to a medium/low. Watch them and move them around in the pan for a few minutes until just lightly toasted.
Add the nuts to the food processor. Then zest the lemon and add the zest along with the juice into the processor. Add the remaining ingredients.
Pulse to combine and then switch to high speed, stopping to scrape the sides down with a rubber spatula. Continue until full combined and a sauce is formed. Taste and add more salt and pepper if needed.
Use right away or store in a glass container in the fridge. Can last up to 5 days in the fridge
Notes
2 Tbls per servingI love to make a double batch and freeze half for future use. I use these silicone molds to store it in individual portion sizes. Just pop a cube or two out when you need it for a meal!