Sugarless Apple Pie
["1 (15 oz.) pie crust, unbaked", "6 apples, peeled and thinly sliced", "1 (12 oz.) can frozen unsweetened apple juice", "4 Tbsp. cornstarch", "1-1/2 sticks butter or margarine"]
["Cook over medium heat until thick, then add sliced apples to mixture and pour in shell."]
["pie crust", "apples", "apple juice", "cornstarch", "butter"]