Hot Fudge Sundae Dessert
["1 can sweetened condensed milk", "1 stick or 1/2 c. butter", "1 (16 oz.) can Hershey's chocolate syrup", "1 tsp. vanilla", "1 box chocolate wafers", "1/4 c. softened or melted butter", "1/2 gal. softened ice cream", "1 carton Cool Whip", "1/2 pkg. pecans (optional)"]
["Bring first 3 ingredients to a boil and watch carefully.", "Let simmer a few minutes.", "Add vanilla, then cool.", "Crush 1 box chocolate wafers or at least 24 wafers.", "Add softened or melted butter.", "Press into 9 x 13-inch pan.", "Freeze for 30 minutes.", "Put softened ice cream on top; freeze another 30 minutes.", "Put cooled sauce on top.", "Freeze another 30 minutes.", "Put Cool Whip on top; sprinkle pecans or reserved cookie crumbs for top.", "Freeze 24 hours."]
["condensed milk", "butter", "chocolate syrup", "vanilla", "chocolate wafers", "butter", "softened ice cream", "pecans"]