I found this one at www.stretcher.com while looking for "homemade baking mixes". This recipe comes out rich and fudgy every single time. It's also very easy to put together initially. Prep time is the time it takes to mix a full batch of brownie mix and put it in bags. Putting it in bags is not necessary, it's just something I do to make an easy thing even easier. Please Note: I have changed the Yield. It was 12 bags. I made a batch tonight and got 10 bags. In my neck of the woods, the cost of each bags-worth of mix comes to $0.53, making this the least expensive dessert in my cookbook. I arrived at this price using Hershey's cocoa.