Spitzbuben are a traditional German cookie made around Christmas time. A layer cookie, spitzbuben are made by sandwiching two cookies together, one with a decorative cut out, with a layer of jam running between. This recipe for German Spitzbuben Cookies makes a scrumptious buttery cookie with a light lemon flavor. After baking the cookies, alternate strawberry and apricot jam to make the cookie sandwiches, or use your favorite jam. Sprinkle with powdered sugar and serve.