01 - In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, baking powder, baking soda, and salt.
02 - In a separate bowl, whisk the buttermilk, eggs, melted butter, lemon zest, lemon juice, and vanilla extract until well combined.
03 - Pour the wet ingredients into the dry ingredients and gently mix until just combined; the batter should remain slightly lumpy to avoid overmixing.
04 - Gently fold fresh or frozen blueberries into the batter.
05 - Heat a nonstick skillet or griddle over medium heat and brush lightly with butter.
06 - Pour 1/4 cup of batter per pancake onto the skillet. Cook until bubbles appear on the surface and edges look set, approximately 2 to 3 minutes.
07 - Flip pancakes and cook for an additional 1 to 2 minutes until golden brown and cooked through.
08 - Repeat the process with the remaining batter, brushing the skillet with more butter as needed.
09 - Serve pancakes warm with maple syrup, extra blueberries, and additional lemon zest if desired.