Yam Delight
["2 c. crushed pretzels", "2 sticks melted margarine", "1 (8 oz.) pkg. cream cheese, softened", "1 (9 oz.) container Cool Whip", "1 c. granulated sugar", "3 c. cooked and mashed sweet potatoes", "1 c. granulated sugar", "1 egg", "3 Tbsp. cornstarch", "1 stick margarine", "1 tsp. vanilla"]
["Mix together the crushed pretzels and 2 sticks melted margarine.", "Put in 2 pie pans or one oblong dish.", "Bake at 450\u00b0 for 12 to 15 minutes.", "Let cool."]
["pretzels", "margarine", "cream cheese", "sugar", "potatoes", "sugar", "egg", "cornstarch", "margarine", "vanilla"]