Blend together avocado, cream cheese, sour cream and lemon peel in an electric blender until smooth. Add pudding mix and blend just until it is mixed in. Pour into the crust and chill several hours before serving.
Mix together crumbs, sugar and butter. Press mixture evenly in bottom of a 9-inch springform pan. Bake at 350 degrees F for 7 to 10 minutes.
Source: E-Cookbooks.net