I do this all the time. My favorite recipe make 6 dozen large chocolate chip cookies. That's a bit much for our small family. Yes, I could half the recipe but I'd rather freeze part of the dough and bake one dozen at a time.
I log-roll my dough in one dozen segments. It is just faster this way for me. I wrap the log in waxed paper - actually, I use the waxed paper to help me shape the log - then wrap that in aluminum foil and stick it in the freezer. To bake I simply slice the log into twelve pieces and bake. I let the cookies stay in a little longer but I don't bother to defrost the dough either.
Alternately, you can put the dough on a cookie sheet, that has been lined with waxed paper, in little cookie sized scoops. Freeze the dough on the cookie sheet. When it is frozen, pop the cookie lumps off the waxed paper and stick them in a plastic freezer bag. When you want to cook one or a dozen, just remove the number of cookie lumps you want. Again, it is up to you if you want to defrost first or not.
I freeze dough in logs too. This is a great way to prep for holiday baking.