*Pre-heat your oven to 350 degrees.
In a large mixing bowl combine the brownie mix, eggs, oil, and water. Whisk until smooth.
Add the marshmallow, walnuts, and both chocolate chips. Use a spatula to fold all of these delicious morsels into the brownie batter.
Pour the batter into a greased 9×9 inch baking pan. (Obviously you can use whatever size you have, but this will affect the baking time.)
Bake for approximately 30 minutes or until the tip of a sharp knife comes out clean.
Allow the brownies to cool for 10-15 minutes before slicing into squares. Enjoy the high.