I am on a never-ending quest for a REALLY chewy brownie recipe. Most brownie recipes promise fudgy or cakey brownies, but I love chewy--and the only place I've found them is from a boxed brownie mix. I'm not opposed to using the occasional mix, but I would love to have a really great recipe for REALLY chewy brownies. I've tried so many recipes, from books and from the web, but none have fit the bill. Any ideas??