Hi Meryl - you should hear my wacky theory!
It happens to me every once in a while, and I can never figure out why. I always buy the same butter from Costco, and I can make good cookies with a part of the pound, and greasy ones from the same batch of butter.
I read somewhere that if you leave the butter out too long, and it gets too soft, the molecular structure changes, and you can't use that butter for cookies, even if you re-chill it.
I did leave that first batch of butter out for a couple of hours, but figured it wouldn't matter, since you melt the butter anyway.
Nope, greasy dough.
So on the second batch, I used butter straight from the fridge, and melted it.
I also thought I musta mis-measured, since I was trying to double everything, so I was extra careful the second time around, no doubling.
Still greasy dough.
Since my original molecularly-changed-butter theory is now out the window, the second theory is that I used the same, unwashed bowl to melt the second batch of butter in the microwave, thus contaminating the second batch too.
If that doesn't hold true, I'm going to have to go with the original thoeory - the darn cookie-grinch is here again!!!
And how come he only affects my cookies??? I just made four batches of cinnamon rolls, and they all came out perfect!
I'm sure it's my grinch and not your recipe. I promise, I'll try it again later (after the grinch leaves), because I'm really craving a crunchy chocolate chip cookie!