To achieve a perfect Tangerine Crumble Cake every time, there are several key tips to follow. Firstly, ensure your ingredients are at room temperature before starting, particularly the butter and eggs. This will help achieve a light and fluffy dough. When creaming the butter and sugar, beat them until the mixture is pale and fluffy, as this step is crucial for the cake’s texture. Use fresh, high-quality tangerines for the filling if available; however, canned tangerines can be used as specified. When preparing the crumble topping, make sure the butter is cold, and mix until the mixture resembles coarse crumbs for that ideal crunch. Lastly, keep an eye on the baking time and avoid overbaking for a moist interior. Following these steps will lead you to a consistently delightful Tangerine Crumble Cake.