I went with other reviews and added half white sugar and half brown sugar and they turned out great! For those who said the dough was sticky, I had no problem and the greasy part... well its PEANUT BUTTER cookies. On half of the mix I added chocolate chips and could not decide which I liked better, plain or the chocolate chips ones. One thing in my experience is going with a real pure vanilla makes a big difference. I would never go with imitation vanilla. Anyways, i love these cookies and still eating them now! Thanks for the recipe.