Add the melted butter to a large mixing bowl. Slowly drizzle in the buttermilk while whisking. This prevents the butter from clumping.
2 tablespoons unsalted butter, melted, 1 cup buttermilk
Whisk in egg and vanilla.
1 large egg, beaten, 1 teaspoon pure vanilla extract
Add flour, sugar, baking powder, baking soda, and salt, and gently mix together on top of the wet ingredients before whisking it all together, until just mixed. The batter will be quite thick.
1 cup all-purpose flour, 1 tablespoon granulated sugar, 1 teaspoon baking powder, ½ teaspoon baking soda, ¼ teaspoon salt
Preheat griddle over medium heat; if desired, grease the griddle with butter. Scoop batter onto preheated griddle, spreading it out as needed. Cook pancakes for 4 to 5 minutes on each side, or until golden brown and cooked through.
Video
Notes
Thinner pancakes: This is a thick pancake batter, and it works best with a scoop. If you prefer thinner pancakes, add ¼ cup regular milk to the batter.
Keep warm: If you're making the pancakes ahead, preheat your oven to 200-250°F. Place a wire rack on a sheet pan; arrange pancakes on the wire rack and keep them warm in the oven until ready to serve. It's best not to cover them because condensation will form and the pancakes will get too soft.