Plum Crumble Dessert Bars

We have been enjoying all the summer fruit harvest. Lately we get cherries, peaches, blueberries, and melon.  When I saw these small black plums from a local grower, I thought we'd try them out.  They are perfect for snacking, but somehow they weren't getting eaten quickly enough.  Looking around for recipes yielded all kinds of interesting plum items.  Finally I settled on these breakfast bars. It's interesting for me to try new recipes.  I liked that the bottom of the crust is baked alone first.  I did question the need for so much butter!  And more butter mixed with the plums.  Next time I would play around with the quantities and see what else works well.  After trying this version, I would call them dessert bars as they are sweet and remind us of apple crisp.