Preheat oven to 350 degrees F. Grease a 13 x 9 inch cake pan and set aside.
In a large mixing bowl, mix together the brownie mix, eggs, oil, and water.
Pour brownie mixture into the greased pan. Bake for 30-35 minutes or until edges start to crisp and look brown.
Let the brownies cool completely.
Once cooled, cut the brownies into 12 squares.
Place a mini Twix in the center of each brownie square.
Gently push two edible googly eyes into the candy coating of each mini Twix at the top of the candy bar.
Using the white decorating icing, swirl the icing back and forth over the Twix to create mummy bandages.