6. In a small bowl, combine the flour, sugar, cold cubed butter, and ground cinnamon. Use your fingers or a pastry cutter to mix the ingredients until you have a crumbly texture.

7. Sprinkle the crumble topping evenly over the cake batter.

8. Bake in the preheated oven for 35-40 minutes or until a toothpick inserted into the center comes out clean.

9. While the cake is cooling, prepare the glaze. In a small bowl, whisk together the powdered sugar and orange juice until smooth.

10. Once the cake has cooled slightly, drizzle the glaze over the top.

11. Allow the cake to cool completely before slicing and serving.

Enjoy your delicious orange cake with a crumble topping!