This blueberry-filled bundt cake is as beautiful as it is delicious. Moist, tender, full of flavors, and summery. It has all the right things to fall in love with it. You can reduce the amount of blueberries, if you wish, but I find that more blueberries make the cake extra tasty. Also, if you wish, you make sprinkle the cooled cake with powdered sugar or drizzle it with a glaze of your choice. But even plain, without any topping, this cake looks spectacular, with purple blueberries peeking out of the golden top, inviting to take a bite and more.