Tuna Cucumber Cups
["4 to 6 large cucumbers (1 1/2-inch thick)", "2 cans tuna, drained", "3 hard-boiled eggs, chopped", "1/4 c. celery, finely chopped", "2 Tbsp. pickle relish", "2 Tbsp. mayonnaise", "2 Tbsp. sour cream", "2 tsp. Dijon mustard", "1/2 tsp. onion powder", "1/2 tsp. red pepper sauce", "1/2 tsp. each salt and pepper"]
["Make the cucumber cup: Wash and peel, using a vegetable peeler. Cut cucumbers into 3/4-inch round pieces. Remove seed centers."]
["cucumbers", "tuna", "eggs", "celery", "pickle relish", "mayonnaise", "sour cream", "mustard", "onion powder", "red pepper", "salt"]