Preheat the Oven: Start by preheating your oven to 180°C. While it’s warming up, grease a round cake pan and set it aside.

Mix Dry Ingredients: In a medium-sized bowl, whisk together the flour, baking powder, baking soda, and salt. This will ensure an even distribution of the leavening agents.

Cream Butter and Sugar: In a larger bowl, cream together the softened butter and sugar until the mixture is light and fluffy. This is crucial for a soft and tender cake.

Add Eggs and Vanilla: Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next. Stir in the vanilla extract.

Alternate Dry Ingredients and Sour Cream: Begin by adding a third of the dry ingredients to the butter mixture, followed by half of the sour cream. Repeat this process, ending with the dry ingredients. This method ensures a smooth batter without overmixing.

Fold in Blueberries: Gently fold in the fresh blueberries, ensuring they are evenly distributed throughout the batter.

Bake: Pour the batter into the prepared cake pan and smooth the top. Place in the preheated oven and bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean.

Cool and Serve: Once baked, remove the cake from the oven and allow it to cool in the pan for about 10 minutes. Afterward, transfer it to a wire rack to cool completely. Slice, serve, and enjoy the heavenly taste of your Royal Blueberry Bliss Sour Cream Coffee Cake!