Breakfast casseroles are the easiest way to feed a crowd for breakfast or brunch, and a timeless breakfast casserole is the quiche. This version of quiche features one of our favorite southern dishescheese grits. Make this crustless quiche in a springform pan for a pretty (and sliceable) presentation. You can cook the cheese grits and sausage up to two days in advance and then bake the quiche the morning of the brunch.