Bake 1 hour 15 minutes or until edge is set 2 inches from edge of pan but center still jiggles slightly. Turn oven off; open door 4 inches. Leave in oven 30 minutes. Run small metal spatula around edge of pan to loosen. Cool on cooling rack 30 minutes. Refrigerate at least 6 hours. Carefully remove side of pan. Beat whipping cream, powdered sugar and amaretto with electric mixer on high speed until soft peaks form. Spread over top of cheesecake. Top with almonds.