Homemade plum cake recipes – how to make an easy upside-down plum cake. Plum cake recipe to bake an upside-down cake with fresh plums and more simple and tasty ingredients. Learn in this video how to make an upside-down plum cake at home from scratch by using a yummy and easy homemade cake recipe! SUPER YUMMY homemade cake recipe by www.homemaderecipesfromscratch.com! ENJOY! ?