1/2 of a 1 lb. pkg. med. shell macaroni
1 (10 oz.) pkg. frozen cooked shrimp, boiled and peeled
1 1/2 c. chopped celery
1 sm. cucumber, quartered and sliced
2/3 c. mayonnaise
1/3 c. sour cream
2 tbsp. horseradish sauce
1 tbsp. grated onion
1 tsp. seasoned salt
1/2 tsp. pepper

Prepare shells according to package directions; drain. In large bowl, combine shells, shrimp, celery, and cucumber. In small bowl, blend mayonnaise, sour cream, horseradish sauce, onion, seasoning salt and pepper. Add to shells mixture; toss to coat. Cover; serve warm or cold. Serves 4-6.