I decided they were good enough that I needed to try making them myself. So, I went to one of my favorite websites, http://www.allrecipes.com/, and found a recipe for Black Bean Brownies. This website has just about anything you can think to cook and it has comments below each recipe from people who've tried it. Not only do you get ratings, but you get advice, suggestions, and ideas about each recipe.
The result? They turned out well. They were pretty easy and are great for people on a gluten-free or low-carb diet. Now, you can't compare them to the thick, fudgy brownies Grandma makes, but they taste great with a little frozen yogurt and chocolate syrup!