Tuna-Cashew Casserole 1 (3 ounce) can chow mein noodles 1 can cream of mushroom soup 1/4 cup water 1 can tuna, drained 1/4 pound cashew nuts 1 cup chopped celery Mix all ingredients except 1/2 cup chow mein noodles. Put into a casserole. Sprinkle reserved chow mein noodles on top. Bake uncovered at 350 degrees F for 40 to 60 minutes.