First I just have to say that you really must try these cookies. The first time I had one of these was at my friend Lisbeth's house, and when she told me she was going to make "Banana Cookies", I was a little reticent. Then she told me they also had oatmeal and chocolate chips, and I felt a little better about it. The defining moment, though, was when she gave me a little round of frozen cookie dough to eat. Let me tell you - not only did I take back my snarky comment about banana cookies being "gross" (or something similarly gracious), I also wound up groveling for the recipe. Lisbeth, being the amazing friend she is, generously complied. You can find the original recipe here.
Raw, frozen cookie dough & warm, gooey cookies
The Dr. practically expects me to have a stock of these in the freezer at all times. In fact, we both like the frozen, raw dough so much I almost never even get around to baking any, but they are quite delicious both ways.
You can make up a batch of these in practically no time at all, with stuff you probably already have lying around your pantry. I almost always make a double batch, and am able to use my hand mixer to mix up all of the ingredients except for the chocolate chips. Once your dough is mixed, use a small cookie scoop (like this) to portion the cookies out into a large, airtight plastic container. You can get about 3-4 dozen cookies into one of Ziploc's large rectangular containers; be sure to put a piece of wax paper between the layers, so the dough doesn't all stick together.
If you're baking the frozen dough, heat your oven to 375 degrees and bake for 8-10 minutes. Basically, you want to leave them in just long enough for the cookies to set, or you'll wind up with crunchy cookies. Still tasty, particularly if you happen to like crunchy cookies, but I prefer these with a nice, chewy texture and just-barely-crispy edges.