Cream butter and sugars.
Beat in egg and vanilla.
Combine the flour, baking powder, and salt and
gradually add to the creamed mixture.
Stir in coconut.
Shape into two 3 1/2 inch in diameter rolls;
and wrap each in plastic wrap.
Refrigerate for at least two hours or until firm.
Slice into 1/8 inch slices.
Place on ungreased cookie sheet
and bake at 425 degrees for 5-7 minutes
Remove to wire rack to cool.
Yield about 5 dozen.