Blueberry crumble cake is a delightful dessert that combines the rich, buttery texture of a cake with the satisfying crunch of a crumble topping. This dessert features a moist and tender cake base, infused with juicy, burstingly sweet blueberries that create a burst of flavor in every bite. Perfect for any occasion, this blueberry crumble cake offers a delicious blend of flavors and textures, making it a comforting and indulgent treat. Serve it warm or at room temperature, optionally dusted with powdered sugar or accompanied by a scoop of vanilla ice cream for an extra touch of indulgence.