Zippy Mango Cheesecake

Ingredients
CRUST: FILLING:
 * 1 cup graham cracker crumbs
 * 1/4 cup chopped walnuts
 * 2 tbsp. brown sugar
 * 1 tsp. cinnamon
 * 1/2 cup melted butter
 * 2 cups sour cream
 * 3 pkgs. (8 oz.) cream cheese, softened
 * 3 eggs
 * 1 cup Sugar
 * 1/2 tsp. salt
 * 2 tsp. vanilla
 * zest of 1/2 orange
 * 2 1/2 cups mango puree

Directions

 * 1) Mix all crust ingredients and press into bottom of springform pan.
 * 2) Thoroughly mix sour cream, cream cheese, eggs, salt, vanilla, orange zest and mango puree.
 * 3) Beat well with an electric mixer.
 * 4) Pour into springform pan.
 * 5) Place pan in bain marie (water bath) and bake 2 1/2 hours at 350'.
 * 6) Increase temperature to 400' and bake 20 minutes more.
 * 7) Let cool before serving.