Whisk milk (440 ml), melted cooled butter (60 g), vanilla (2 tsp) and egg (1) together, then fold into combined flour (290 g), sugar (60 g), baking powder (4 tsp), baking soda (1/4 tsp) and salt (1/2 tsp). Mix to a thick, smooth batter (lumps okay); thin with extra milk (440 ml) if needed. Rest while pan heats.
Heat nonstick pan on low-medium, grease with butter. Pour 60ml batter, spread into a round. Cook until underside golden and bubbles appear, flip and cook until golden. Repeat.