Combine pecans with butter, sugar, salt, pepper and cayenne in non stick pan. Cook over medium heat until the sugar caramelizes and pecans are well coated. Stir often. Pour onto a lightly greased sheet of foil. Let cool completely. Break up pieces by hand or chop on cutting board.
Combine all of the dressing ingredients in bowl or jar and whisk until well blended. Refrigerate leftover dressing.