Simply add your nuts to the bowl of a food processor, turn on and let run until a smooth nut butter forms. (amodernhousewife.com)
Blend hazelnuts and salt in a food processor until a smooth, creamy nut butter forms (it should be pretty fluid; keep processing if still stiff); set aside. (bonappetit.com)
Add peanuts to a food processor and blend until a thick nut butter forms. (fooddoodles.com)