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

1. Preheat Oven: Begin by preheating your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan.
2. Mix Dry Ingredients: In a large mixing bowl, combine the flour, baking powder, and salt. Set aside.
3. Cream Butter and Sugar: In another bowl, beat together the softened butter and granulated sugar until the mixture is light and fluffy.
4. Add Eggs: Gradually add the eggs, mixing one at a time until fully incorporated.
5. Add Wet Ingredients: Incorporate the milk, lemon zest, and vanilla extract into the butter-sugar mixture, mixing until well combined.
6. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
7. Fold in Blueberries: Carefully fold in the blueberries, ensuring they are evenly distributed without breaking.
8. Pour Batter: Pour the cake batter into the prepared baking pan, smoothing the top with a spatula.
9. Bake: Place in the preheated oven and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
10. Cool: Once baked, remove from the oven and allow the cake to cool in the pan for about 20-30 minutes. Then transfer to a wire rack to cool completely.
11. Dust with Powdered Sugar: For a finishing touch, you can dust the top with powdered sugar before serving.

Following these steps, you will create an incredible Lemon Blueberry Cake that will surely impress your family and friends!