In a mixing bowl, whisk together the flour, milk, eggs, melted butter, sugar, and salt until smooth.
Heat a non-stick skillet over medium heat. Lightly grease with butter or oil.
Pour a small amount of batter into the skillet, tilting to spread evenly. Cook until the edges start to lift and the bottom is golden brown, about 1-2 minutes.
Flip and cook the other side until golden brown, about 1 minute. Repeat with remaining batter.