01 - Preheat oven to 350°F. Grease and flour a 9-inch round cake pan or line with parchment paper.
02 - Whisk together flour, baking powder, baking soda, and salt in a medium bowl until well blended.
03 - Beat butter and sugar together in a large bowl until light and fluffy, approximately 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 combined.
05 - Gradually add dry ingredients to the wet mixture, alternating with milk, beginning and ending with flour. Mix until just combined.
06 - Toss blueberries with 1 tablespoon flour, then gently fold into the batter until evenly distributed.
07 - Pour batter into the prepared pan and smooth the top. Bake 38-42 minutes or until a toothpick inserted in the center comes out clean.
08 - Let cake cool in the pan for 15 minutes, then transfer to a wire rack to cool completely. Mix powdered sugar and lemon juice until smooth, then drizzle over the cooled cake.