Picture this with me, please. The world's best grilled cheese sandwich, cooked to perfection with lots of creamy melted cheese, just the right amount of sweet tomato, all gathered between soft country bread that has been cooked to just the right amount of toasty goodness. We've all been there, right? Now take all that deliciousness and imagine it for supper, but not as a sandwich. Nope, imagine it as a casserole, full of grilled cheese sandwich wonderfulness, but bubbling away in your oven. I know. I know!!