Here is my easy tuna casserole dish... good for you and delicious as well!  (You can substitute the white pasta for brown/soups for low sodium if you want).

What you need...
4 Fresh green onions finely chopped/sliced
2 cans of Campbell's Cream of Celery Soup (do not add milk/water)
2-3cups of baby seashell noodles
1 large can of peas (drained)
2 cans flaked white tuna (drained)

Boil the noodles and then combine all ingredients.  Add the peas last so they don't get too mashed up.

Pour mix into a greased/nonstick casserole dish and bake for about 40 minutes at 350.

Feel free to add some paprika on top as a garnish!