Creating this Lemon Blueberry Cake can be enjoyable if you follow these clear steps:

1. Preheat the Oven: Set your oven to 350°F (175°C). Grease and flour 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. Combine Wet Ingredients: In another bowl, mix the yogurt (or sour cream), vegetable oil, eggs, lemon zest, lemon juice, and vanilla extract until fully blended.
4. Combine Mixtures: Gradually add the wet ingredients to the dry ingredients, stirring until the mixture is smooth and well combined.
5. Fold in Blueberries: Gently fold the blueberries into the batter to ensure they are evenly distributed without breaking them apart.
6. Divide Batter: Pour the batter evenly into the prepared cake pans.
7. Bake: Place the pans in the preheated oven and bake for 40-45 minutes, or until a toothpick inserted into the center comes out clean.
8. Cool the Cakes: Remove the cakes from the oven and let them cool in the pans for about 15 minutes. Then transfer them to wire racks to cool completely.
9. Prepare Frosting (Optional): While cooling, you can make a simple lemon glaze or cream cheese frosting, if desired.
10. Assemble the Cake: Once cooled, place one layer on a serving dish. Spread frosting (if using) on the first layer, then place the second layer on top. Frost the top and sides as desired, and dust with powdered sugar for that finishing touch.