Combine Graham Crackers crumbs, melted butter and light brown sugar in medium size bowl. Press into the bottom and slightly up the sides of a 9" springform pan and place in refrigerator to harden.
Preheat Oven 350°F 15 to 30 minutes before baking. Slowly blend softened cream cheese into a large mixing bowl. Next add butter and cornstarch and continue to mix. Slowly add sugar and continue to mix well. Beat in eggs, one at a time. Add Whipped Cream and Vanilla Extract and continue to mix until well blended. Pour mixture in Crust.
For the crumbs, combine in a small bowl the flour, brown sugar, softened butter and cinnamon. Mix until crumbly. Sprinkle over cheesecake mixture and cover completely. Bake for 45 minutes to an 1 hour. Sides should look somewhat dry when done. Turn off and crack the oven door. Leave in for 15 more minutes. Let cool on rack.
Chill in refrigerator for 2-3 hours or until the cheesecake has set. Enjoy your Apple Crumb Cheesecake.