Butter sides and bottom of a springform pan. Mix all the ingredients for the crust and spread in the bottom of the pan. Bake at 200 degrees for 8 minutes.
Mix all the ingredients for the topping and place in the refridgerator.
For filling : Beat cream cheese and sugar in a large bowl. Add remaining ingredients. Fold into baked crust. Bake at 300 degrees for 10 minutes. Turn oven down to 200 degrees and bake for 1-1/2 to 2 hours. Check frequently. Should not brown on top. When done, knife inserted in the middle will come out clean. Remove from oven. Let sit 10 minutes, cover with topping, bake 10 more minutes.