Step 1: In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
Step 2: In another bowl, beat eggs, then whisk in buttermilk, melted butter, and vanilla extract.
Step 3: Pour wet ingredients into dry ingredients and stir just until combined (small lumps are okay).
Step 4: Heat a griddle or non-stick skillet over medium heat and lightly grease with butter or oil.
Step 5: Pour 1/4 cup batter per pancake onto the griddle and cook until bubbles form on top and edges look set.
Step 6: Flip pancakes and cook until golden brown on the other side, about 1-2 minutes more.
Step 7: Serve warm with maple syrup, butter, or your favorite toppings.