Preheat the oven to 350°F (180°C). Add raw almonds and pecans to a baking tray and bake for 5-7 minutes. Mix them through a few times. Be careful not to burn them (ovens can vary). After roasting, let the nuts cool down slightly.
To make banana powder, place the freeze-dried bananas in a high-speed blender and pulse into a fine powder. Transfer to a bowl. Set aside.
To the high-speed blender (or food processor), add peanuts, roasted almonds, and pecans and blend on low speed until the nuts are all evenly mixed. Scrape down the sides to make sure everything blends. Then blend on high speed until it forms into a creamy butter. If you’re using a high-speed blender, use a blender tamper accelerator to push down the nuts while mixing. The blending might take from 4-10 minutes, depending on your blender/food processor. Add banana powder, cinnamon, and a pinch of sea salt and blend until combined.
To sweeten the butter, add maple syrup and then any neutral oil to thin it out (optional step).
Transfer the butter to a jar and let it cool completely without any cover.