Over medium heat in a skillet, gently toast pecan halves for a few minutes before adding to food processor. There is no need to add oil to the pan as the pecans have enough oil on their own.
Transfer pecan halves to food processor. Process for about 15 minutes, pausing occasionally to scrape the sides of the food processor. The pecan butter is done when you see an oil sheen on the butter. If you are not used to this process, please note that it will probably take anywhere from 10-20 minutes to reach the consistency you desire.
Add salt, cocoa powder, tahini (optional), and chocolate protein powder. Start pulsing to combine before changing to the constant run of the food processor. Through the pour spout, add maple syrup, and pecan oil. Process until you reach the desired consistency.
If you need to thin the butter, add more oil (1 tsp. at a time to be cautious) until it suits your preferences. Stir in cacao nibs and spread onto a baguette or piece of toast! Sprinkle with more cacao nibs, if desired.