This delicious Chocolate Chip Streusel Breakfast Skillet Cake is proof that it's acceptable to eat cake for breakfast, but can really be eaten at any time of the day (because there's no wrong time for cake). This chocolate chunk cake with a crumbly brown butter streusel topping is always a crowd-pleaser, yet easy enough for the kids to help make. And, it's all cooked right in a skillet for easy clean-up!