01 - Whisk together the flour, sugar, baking powder, baking soda, and salt in a large bowl.
02 - In a separate bowl, whisk the buttermilk, milk, eggs, melted butter, vanilla extract, lemon zest, and lemon juice until well combined.
03 - Pour the wet ingredients into the dry ingredients and stir gently until just combined, leaving some lumps intact.
04 - Fold fresh blueberries into the batter carefully to avoid breaking them.
05 - Heat a nonstick skillet or griddle over medium heat and lightly coat with butter.
06 - Pour approximately 1/4 cup of batter per pancake onto the skillet. Cook until bubbles form on the surface and edges appear set, about 2 to 3 minutes.
07 - Flip the pancakes and cook for an additional 1 to 2 minutes until golden and cooked through.
08 - Continue cooking remaining batter, greasing the skillet as needed between batches.
09 - Stack pancakes while warm and drizzle with maple syrup. Garnish with extra blueberries and lemon zest if desired.