When you begin your boxed brownie creation journey, you may be tempted to immediately reach for the myriad of delicious add-ins that can bring your baked goods to a fun and fancy place. Before you reach for something creamy or crunchy, it is worth examining the ingredients that you can use to improve upon the brownie itself.
For example, if you want to end up with an extra chewy boxed brownie, all you have to do is add milk. Substitute milk where the recipe calls for water, and you’ll end up with rich brownies with a considerably chewier consistency. Whisking ½ cup of mayo into your boxed brownie mixture is the secret to making moist brownies. Another fat substitution that could kick your boxed brownies up is using melted butter instead of cooking oil. Simply melt your butter and include that same amount of liquid butter as the recipe calls for oil. Doing this will result in a more dense and substantial finished cake.