Brownies are popular treat at our house. My husband loves to make it with the little ones in the evening with some homemade ice cream. We pick up the Ghiradelli mix at Costco and the kids can drop all of the ingredients in the stand mixer. You avoid the mess, and the kids don't end up touching raw end.
There are two problems with traditional brownies. 1) It takes quite a bit of waiting around for it to bake and cool enough to eat, and 2) At our house, the brownies are eaten edge inward.
Here is where the waffle iron shines. Just put one ladle of brownie batter onto a waffle iron in medium heat, and in just a few minutes, you have brownies that is all edge. I prefer a Belgium Waffle maker because there is enough depth for it to be warm and gooey inside and also crispy on the outside.
To make it healthier, we replace half of the oil with no-sugar added applesauce. That makes it a bit more cakey, than crisp but is sill delicious.