In America, when we think of cheesecake, we usually think of New York Style cheesecake, which uses a cream cheese filling and a graham cracker crust. In other parts of the world, Cheesecake may incorporate cottage cheese ricotta, or other soft cheeses baked im a pie crust or phyllo dough. This recipe combines the best of all worlds, with a buttery shortbread cookie crust, creamy ricotta interior, fresh roasted pumpkin and warm spices.