01 - Preheat oven to 350°F. Grease and flour a 9-inch round cake pan or line with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt until well blended.
03 - In a large bowl, beat butter and sugar together until light and fluffy, about 3 minutes.
04 - Add eggs one at a time, beating well after each addition. Mix in yogurt, lemon zest, lemon juice, and vanilla extract until smooth.
05 - Gradually add dry ingredients to wet mixture, alternating with milk. Begin and end with flour mixture. Mix until just combined.
06 - Toss blueberries with 1 tablespoon flour, then gently fold into batter until evenly distributed.
07 - Pour batter into prepared pan and smooth top. Bake for 38-42 minutes or until toothpick inserted in center comes out clean.
08 - Let cake cool in pan for 15 minutes, then transfer to wire rack to cool completely.
09 - Mix powdered sugar and lemon juice until smooth. Drizzle over cooled cake.