I made this Toasted Coconut Butter in my Thermomix, but have also had success making coconut butter in a food processor. I have not, however, made coconut butter using a hand held blender or normal blender, so cannot advise whether it is possible to make coconut butter with these appliances.
I made this in the Thermomix on Speed 8 for 5 minutes. It produced a lovely smooth, dark butter.