My batter seems to turn pupley for me with fresh or frozen blueberries.
This is just after I took it out of the oven. After this I lost energy to take pictures so I don't have one of it out of the pan but it came out beautifully.
The next morning I made a glaze (not the one with the recipe) of powdered sugar, milk, and vanilla. I drizzled this on the cake, cut it, and plated it to take to the church. Then I remembered to take a picture.
Kate usually doesn't eat things with blueberries but she downed at least 3 pieces of this. I was unwrapping it in the car and passing pieces to the back seat. I came home with 2 1/2 pieces which didn't stand a chance against Sam and his buddy's after-school munchies. Craig actually didn't get any.