1 pkg. mac & cheese, boxed
2 tbsp. butter
1 (16 oz.) can tomatoes, drained
1/4 tsp. salt
2 tbsp. chopped onion
1 (6 1/2 oz.) can tuna, drained
2 tbsp. dry parsley

While preparing macaroni and cheese dinner, saute onions in butter until tender. While macaroni is still in pan, add all ingredients. Mix and cook for another 10 minutes, stirring occasionally. Serves 4.