Blueberry Dump Cake Be The First To Review By Anonymous recipe An easy blueberry dessert. Blueberry Dump Cake Ingredients 1 (18.5 ounce) package yellow cake mix4 cups fresh blueberries1/2 cup white sugar1/2 cup butter, melted1 teaspoon ground cinnamon Instructions 1 Preheat oven to 350 degrees F (175 degrees C). 2 Mix berries, sugar, and cinnamon in the bottom of a 9 x 13 inch pan. Cover berries with dry cake mix. Pour butter over cake mix, do not stir. 3 Bake for 30 minutes, or until light brown. Serve warm or cold. top with ice cream.