I roasted a pan of hazelnuts yesterday and used them to make a batch of hazelnut butter. It only takes about three minutes in a food processor. Here are the step by step photos:
I used my 27 year old Cuisinart (college graduation gift) and put in one pound of roasted (cooled) nuts.
After one minute of continuous processing, the mixture looks pretty dry and grainy. Keep going!
After three minutes, the nut mixture has become shiny (from the natural nut oils) and spreadable, with a texture much like almond butter. At this point, you could add a bit of sea salt, but I think it tastes great without it.
Subbing hazelnut butter for peanut butter in this recipe makes delicious cookies.