I learned this tip from a friend, and I love it! Last time I had to make cookies for a cookout, I made a double batch of chocolate chip/M&M cookies. I chilled the dough and then rolled it into balls. I stuck the balls on a cookie sheet and placed them in the freezer. Once they were frozen, I put them in a baggie and stored them in the freezer. Now whenever my sister and I want a couple of cookies, I can take out a couple and bake them in my toaster oven. (I have already baked some from a frozen state and they did just fine.) That's a lot cheaper than buying the pre-formed cookie dough at the store and we can control portion size at the same time. (Not to mention the fact that I'm not heating up the whole house to cook them!) That's what works for me!