Thank You Rick Gallop! Taken from his book, "The GI Diet Clinic" - A low glycemic version of Pecan Brownies. And no, you can't taste the beans! Of course this recipe is packed with fiber so they are healthy, but oh so tasty, so get baking! Nuts on top add some crunch to these cakey brownies. Storage: These brownies need to covered with plastic wrap or cut and stored in airtight container for up to 4 days. They can also be frozen for up to 2 weeks.