Preheat oven to 230ºC Place cookies in resealable plastic bag. Squeeze out excess air; seal bag tightly. Roll over cookies with rolling pin until finely crushed. Combine cookie crumbs and butter in medium bowl; press onto bottom of 23 cm springform pan. Beat cream cheese in large bowl until creamy. Add sugar, flour, salt and vanilla; mix well. Add eggs, one at a time, beating well after each addition. Blend in cream. Pour over crust. Bake 10 minutes. Reduce oven temperature to 90ºC Continue baking cheesecake 35-40 minutes or until set. Loosen cake from rim of pan; cool before removing rim of pan. Prepare Caramel Topping and Chocolate Topping. Drizzle over cheesecake. Refrigerate cheesecake. Sprinkle with pecans just before serving. Caramel Topping. Combine ingredients in small saucepan; stir over low heat until smooth. Chocolate Topping. Combine ingredients in small saucepan; stir over low heat until smooth. Decadent Cheesecakes from Cooking Class Magazine, March 1993.