Lunchtime emergency? This feeds a hungry mommy (with seconds!) and two young'uns with leftovers enough for a supper side dish.
Boil up a few dry cups of your choice pasta - I used rotini, but shells would be good, too. Drain and return to the pan on the burner, heat off. Stir in a can of cream of chicken soup and thin this with a few tablespoons of milk. Stir into this a small, drained can of diced tomatoes with green chilies. Stir in several thin slices of real cheddar cheese until all is smooth and creamy; feel free to be liberal with the cheese.
I served this with canned peaches and mango-pineapple juice.