Blueberry Dump Cake

"Blueberry Dump Cake, an easy fruit dessert for a crowd or any occasion. Start with some defrosted (or fresh) blueberries, add a little orange juice, orange zest, and flour, then top with cake mix. Pour melted butter and buttermilk over the top and bake for about 45 minutes. It's great warm right out of the oven topped with vanilla ice cream and/or whipped cream. Similar to a crisp or cobbler, and so easy to make!"