"Pumpkin Streusel Cheesecake Bars with a cookie base made from oatmeal, gingersnaps, chopped walnuts, and 1/2 cup unsalted butter. The filling includes 2 8oz packages of cream cheese, sugar, 14 oz can of pumpkin, 2 tablespoons all-purpose flour, pumpkin pie spice, 2 eggs, and 2 tablespoons whipping cream. Toppings are chocolate chips and basic caramel topping. Recipe should be suitable for 4 servings, use imperial units, and include detailed steps for preparation and baking."