Beat butter, sugar, egg, and vanilla. Add flour, baking powder, baking soda, and salt, beating until well blended. Stir in oats, nuts, and gumdrops.
Drop by rounded tsp. on ungreased cookie sheet 1 1/2" apart. Bake 350° 12-14 mins until golden.
Remove from baking sheet and cool on racks.
Recipe submitted by Dobie on 3/18/00