Frozen berries (not packed in any syrup), thawed and drained, can be used in place of the fresh raspberries.
This is a great cake to bring to a friend’s house, along with coffee or latte, in the morning or afternoon.
You can use the remaining cake mix (about 1 2/3 cups) to make about 12 cupcakes. Add 2 eggs, 1/2 cup water and 3 tablespoons vegetable oil to the cake mix. Mix and bake as directed on box.