In a bowl mix the egg and the milk

In a separate bowl mix the flour, sugar, salt, baking soda and baking powder

Mix both bowls, once it's homogeneous add the butter and whisk until everything is throughoutly combined

Let it rest for 5 minutes

Heat the pan and add a bit of butter or oil

Add a cup of mix and cook until golden brown, flip when it feels firm instead of waiting for bubbles to appear