Preheat oven to 350 degrees F. Grease a 9 inch bundt pan.
In a large bowl, add all cake ingredients except blueberries. With an electric mixer, beat 30 seconds on low until all ingredients are combined. Turn speed up to medium and beat an additional 2-3 minutes.
2 1/3 cups all purpose flour, 1 cup granulated sugar, 1 teaspoon baking soda, 1/2 teaspoon salt, 1/2 teaspoon baking powder, 1/2 cup unsalted butter, 3/4 cup milk, 3/4 cup sour cream, 2 eggs, 1 teaspoon vanilla extract
Stir blueberries into cake batter. Pour into bundt pan and bake 50-60 minutes, until toothpick comes out clean in the center.
1 1/2 cups blueberries
Leave cake to cool in pan for 15-20 minutes before turning out onto a cooling rack.
Make glaze by whisking all ingredients together in a medium bowl until desired consistency is reached. Pour onto cooled cake. Add additional fresh blueberries if desired. Let set before serving.