Creating Blueberry Lemon Cake is straightforward if you follow these easy steps:

1. Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan or two 9-inch round cake pans.
2. Mix Dry Ingredients: In a large bowl, whisk together the flour, baking powder, baking soda, and salt.
3. Cream Butter and Sugar: In another bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Add Wet Ingredients: Add the eggs, buttermilk, lemon zest, vanilla extract, and lemon juice to the butter mixture. Mix until well combined.
5. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, mixing until just combined. Do not overmix.
6. Fold in Blueberries: Gently fold the fresh blueberries into the batter, being careful not to break them.
7. Pour Batter: Pour the batter into the prepared baking pan(s), smoothing the top with a spatula.
8. Bake: Place in the preheated oven and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
9. Cool: Once done, remove from the oven and allow the cake to cool in the pan for 15-20 minutes. Then transfer it to a wire rack to cool completely.
10. Make the Lemon Glaze (Optional): In a small bowl, whisk together powdered sugar and lemon juice until smooth. Adjust the consistency with more lemon juice or powdered sugar as needed.
11. Glaze the Cake: Drizzle the lemon glaze over the cooled cake, allowing it to drip down the sides.

These steps will guide you in creating a moist and flavorful Blueberry Lemon Cake that is sure to impress.