Corn bread casseroles are a too-busy cook's dream. A handful of pantry staples--frozen and canned corn, corn muffin mix, butter, sour cream and an egg--are baked into something delicious and comforting. We jazz ours up with shredded cheddar and sliced scallions. You can keep it classic and skip the mix-ins, or you can add whatever you have on hand. Try diced ham and chopped bell pepper along with the cheese and scallions. Or make a spicier casserole with two seeded and diced jalapenos and 1/2 cup of chopped cilantro.