Step by step

in another bowl, cream the butter with the eggs, then pour this mixture into the flour and sugar, finally adding the milk, stirring quickly.

If you want you can change the filling according to taste, adding jam or cream instead, for example
In 1703, the first usage of the term ‘muffin’ was used in English, with the spelling ‘moofin’. However, this would have referred to the ‘English muffin’ which is a type of griddle-cooked leavened bread rather than the sweet cake-like muffin which was developed in America much later