Feather-Bed Eggs for Two

"The title of this recipe makes me think of lounging around amidst warm, fluffy down comforters and pillows, anticipating this tasty breakfast for two. It's prepared the night before, so it's a snap just to stick it in the oven the next morning. This recipe is originally from a bed & breakfast recipe site; I replaced the milk with plain yogurt and used a couple of slices of sourdough bread for the base. I like very sharp Cheddar cheese plus thyme and/or oregano (or even tarragon) for the herbs. You can add onion, sausage, green peppers, etc., but I like this dish the way it is! Prep time includes an overnight stay in the fridge."