Creating your delicious Blueberry Cake is simple when you follow these easy steps:

1. Preheat the Oven: 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 medium bowl, whisk together the flour, baking powder, and salt. Set aside.

3. Cream Butter and Sugar: In a large mixing bowl, cream the softened butter and granulated sugar together until light and fluffy.

4. Add Eggs and Vanilla: Beat in the eggs one at a time, mixing well after each addition. Then stir in the vanilla extract.

5. Combine Mixtures: Gradually add the dry ingredient mixture to the wet ingredients, alternating with the milk. Mix until just combined.

6. Fold in Blueberries: Gently fold in the blueberries and lemon zest (if using) until evenly distributed. Be careful not to overmix.

7. Pour Batter: Pour the batter into the prepared baking pan(s), spreading it evenly.

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 the Cake: 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. Dust with Powdered Sugar: Once cooled, dust the top with powdered sugar for a lovely presentation, if desired.

These steps will guide you in creating a moist and flavorful Blueberry Cake that is sure to be a hit!