I started loving plum cake, when I was a kid. We usually ate this with a big scoop of whipped cream on the patio or at a family gathering in late summer. Plum cake with crumble is a divine combination. Since plums can be rather tart, the crumble adds just the right amount of sweetness to make this such a wonderful cake. We, lucky ones, have our own plum tree in the garden and I am already looking forward to making my first plum cake of the summer – as soon as the berry season ends and the plums are turning from green to a beautiful purple. So let’s get…