Dh LOVES Mississippi Mud Cookies, so he requested a cake like that for his b-day. I didn't have much time to do the more involved recipes I found, but this one seemed like a good sub. He wasn't crazy about the marshmallow topping, but the rest of us loved it. I only used one box of brownies and put it in a 9x13 pan. I also melted the frosting in the microwave for a minute or so, to make it easier to drizzle. The boys and I snacked on it all weekend, so it was definitely a keeper for us. :-)
We really enjoyed this cake. It was so easy to make. Loved the toasted pecans too. Will make again soon. Thanks for posting.
We all LOVED this easy and delicious treat. I halved the recipe because *each* box of brownie mix needed 2-3 eggs and 2/3 cup oil and I didn't have enough oil. I let the marshmallows deflate and cool a little before drizzling with Grandma's Chocolate Fudge Frosting. I used walnuts instead of pecans but otherwise followed the recipe. Thanks for posting this delicious treat!