Do cookies go on the top or bottom?

Online Answer
The simple answer to this question is, meet in the middle. Cookies should (almost) always be baked on the middle rack of the oven. The middle rack offers the most even heat and air circulation which helps cookies bake consistently.
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Your baked goods won't stick to it, and when you're done you can throw out the parchment instead of washing the pan. If you have no parchment paper, you can still bakeyou'll just have to be a bit more creative..
So one way to get the best of both: Use half butter and half shortening. By the way "butter" here is butter. Real butter, not margarine.
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To save these cookies, I let them completely cool first. Then continue baking them at 180 degrees C for 5 minutes. After which, turn off the oven, and again leave them in and let the trapped heat continue cooking them.