Preheat the oven to 350°F. Combine butter and eggs and whisk/mix. Slowly add in the brownie mix. Once the mixture is uniform, add in the cherries and walnuts; set aside. Lightly grease a brownie pan and place the chunks of cookie dough sporadically around the bottom of the pan (there may be a few pieces of cookie dough left, do with them what you must). Pour the brownie mix over the top, evenly coating the cookie dough. You may need to use the back of a spoon to help spread the mixture. Bake for 30-35 minutes or until you can stick a toothpick in the center and it comes out clean. Enjoy!