Mix margarine, peanut butter, sugars and egg thoroughly. Blend all dry ingredients; stir in. Roll into ball the size of large walnuts. Place 3" apart on ungreased cookie sheet. Make thumbprint in each cookie. Bake 10 to 12 minutes at 375°. Unwrap kisses. When cookies are baked, put kisses in thumbprint; let cool. Makes 2l/z to 3 dozen.