Protein-loaded, portion-friendly, and highly portable, the dish takes advantage of boxed corn muffin mix, conveniently packaged with all the necessary ingredients, so all that’s left to do is mix and pour. As it bakes in the oven, the cornbread magically settles down, creating a firm base for the custardy eggs. Mix-ins are just a suggestion – replace them all 1:1. Pickled jalapeños can be substituted with roasted red peppers. Almost any flavored cheese such as Monterey Jack, or Swiss, can be substituted for the cheddar. And a pre-cooked protein like crumbled breakfast sausage, chorizo, or tempeh can be substituted with bacon.