• Preheat oven to 350°. Prepare a loaf pan by spraying with a non-stick spray. Set aside.

For the Streusel Topping

• In a medium-sized mixing bowl, combine flour, brown sugar, cinnamon, and butter.
• Using a fork, cut the butter into the mixture. Set aside.

For the Blueberry Center

• In a small bowl, combine the cinnamon and brown sugar.
• Set aside.

For the Cake

• In a small bowl, sift flour, baking soda, baking powder, and salt.
• In a large mixing bowl, beat butter and sugar until fully incorporated and fluffy.
• Add in eggs, one at a time, ensuring that you are beating the mixture in between each egg being added.
• Next, add half of the flour mixture and mix well.
• Now, add in the sour cream, followed by the last of the flour mixture. Mix until well combined.
• Next, pour half of your batter into your prepared pan.
• Evenly sprinkle the fresh blueberries and the center mixture over the cake batter and top with the remaining batter.
• Sprinkle top of cake with the streusul topping.
• Bake in oven for 45-50 minutes or until the cake is golden brown and an inserted toothpick comes out clean.
• Remove from oven and let cool.

For The Glaze

• In a small bowl, mix powdered sugar, vanilla and milk.
• Drizzle over the top of the cake, then enjoy!