Chocolate Mousse Pie
["1 graham pie crust", "1 1/2 c. milk", "1 envelope unflavored gelatin", "1 (6 oz.) pkg. semi-sweet chocolate chips", "1 tsp. vanilla", "2 c. whipped topping"]
["In saucepan, sprinkle unflavored gelatin over milk.", "Let stand 1 minute.", "Stir over low heat until gelatin is completely dissolved, about 5 minutes.", "Add chocolate and continue cooking, stirring constantly until chocolate is melted.", "Stir in vanilla. Chill 1 hour, stirring occasionally, until mixture mounds when dropped from spoon.", "Fold in whipped topping.", "Turn into crust and chill 3 to 4 hours."]
["graham pie crust", "milk", "unflavored gelatin", "semi-sweet chocolate chips", "vanilla", "topping"]