Thank you so much for this information. I, too, have always found that my cookies spread, particularly if I use all butter. I thought it was the butter that was the problem and have been using part butter, part margarine or vegetable shortening in order to take care of the problem. But now I think I will try the lower temperature. Thank you for all the information you publish in your Sunday recipe roundup.... It has become something I look forward to every Sunday!

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