I was at a "Ladies' Coffee" and one of the hostesses made these amazing peanut butter brownies. I asked her for the recipe and she was kind enough to share it with me. She said it originally had come from an issue of Bon Appetit magazine. She cut these into 25 very tiny cubes,because they are quite rich. You can cut them as large or small as you like- I generally get 16 small brownies out of one batch.