1 lb. pkg. elbow or shell macaroni
2 lbs. steamed shrimp
1 c. mushroom soup
1 med. onion finely chopped
1 qt. tomatoes
3/4 lb. sharp Cheddar cheese
Salt and pepper to taste

Reserve about 1/3 of grated cheese to sprinkle on top of dish. Combine above ingredients and put in a covered casserole. Bake in moderate oven of 350 degrees for about 40 to 50 minutes. Then remove cover so cheese on top will brown during the last 10 minutes.