Pre-heat your oven to 325oF if using a silver 9 inch spring form pan; 300oF if using a dark non-stick 9 inch spring form pan. Mix crushed cookies and butter; press firmly onto bottom of pan. Bake 10 minutes.
Sift together splenda and unsweetened cocoa. Set aside. Beat cream cheese, vanilla and butter with electric mixer on medium speed until well blended. Add dry ingredients and beat to completely incorporate. Add eggs, one at a time, mixing on low speed after each addition just until blended. Pour over crust.
Bake 45 – 55 minutes or until center is almost set. Run Knife or metal spatula around rim of pan to loosen cake; cool before removing rim of pan. Refrigerate 4 hours or overnight. Top with whipped topping and fruit.
*Cream cheese can be softened by microwaving on high for 30 – 45 seconds.
*For ease of serving; lightly butter ring of spring form pan and line the bottom with a circle of wax or parchment paper as well as lining the sides with strips of wax or parchment. Lightly buttering the sides and bottom help the paper to stick and when it’s ready to serve when you take the ring off you just have to carefully peal the parchment/wax paper off. The sides of the cake don’t get mangled this way.