My sister sent me the recipe to these wonderful cookies.
Chewy Chocolate Chip Oatmeal Cookies
She mixed up a batch, baked a few and then froze the rest into cookie-balls. I also tried it and it worked fabulously! To freeze, I dropped teaspoon size balls of dough onto a cookie sheet and let it freeze until firm. (It didn't take as long as I thought it would - maybe 20 minutes).
Then I tossed 6-10 frozen dough balls into each ziplock and put them back into the freezer. Now when I get a late-afternoon cookie craving, I pull a baggie out of the freezer and bake up some oatmeal goodness. There's no need to thaw the frozen dough before baking, but I did find that the frozen cookies need to bake for about 1 minute longer than just the regular dough did.