Add the 3 cups raw pistachios into a high-powered blender and process for 5 minutes.
Next, add the ¼ cup avocado oil, ⅓ cup powdered sugar, 1½ tablespoons Tahini paste, and ½ teaspoon salt.
Continue to process for another 15-20 minutes. (depending on your blended you may only need 15 minutes- stop when it looks creamy to you -see note)
Every 5 minutes or so, you can open the blender and scrape down the pistachios on the side of the blender.
Keep blending until you get a smooth paste or cream texture. Don't worry it will happen. You do not need to add more oil.
Transfer the pistachio cream into a large jar or two small jars. Use as needed or store in the fridge * see notes.
Video
Notes
Serving size: 2 tablespoons
Makes a total of 2 and 1/4 cups.
I stored mine in an 18-ounce jar.
Do not overblend, otherwise it will become too oily. When you blend any nut for too long, it will release its natural oils. Depending on the blender, you may need 15 minutes. Watch it and stop when it looks creamy enough.
Pistachios: If you want to use what you have on hand, like roasted pistachios, it will also work. The taste and color will vary slightly. If you plan to use salted pistachios, refrain from adding additional salt. Also, most pistachios will have skin on them. If you want to keep it on, that's fine, but the pistachio cream will have a darker color from the skin of the pistachios.
Storing: I had these on my counter for 2 weeks once, and they held up well. If you prefer to store them in the fridge, you can. Treat them like you would any other nut butter, which typically has a long shelf life.
You may see some people making this with powdered milk or white chocolate. I do not feel like there is a need for this or the added calories. Up to you.