Tuna Cheese Crescent Squares
["1 (8 oz.) pkg. crescent dinner rolls", "1 (8 oz.) pkg. Philadelphia cream cheese", "1/2 c. mayonnaise", "1/4 c. margarine, softened", "1 Tbsp. minced onion", "1/2 tsp. dry mustard", "1/2 tsp. salt", "1/8 tsp. pepper", "1 (6 1/2 oz.) can tuna, drained", "1 1/2 c. American cheese, shredded"]
["Heat oven to 375\u00b0.", "Separate crescent dough into 2 long rectangles.", "Place in ungreased 13 x 9-inch pan and press dough over bottom and 1/2-inch up sides to form crust."]
["crescent dinner rolls", "Philadelphia cream cheese", "mayonnaise", "margarine", "onion", "dry mustard", "salt", "pepper", "tuna", "American cheese"]