In a large mixing bowl, combine the flour, sugar, salt, and yeast. Mix well.
Gradually add the warm milk and melted butter to the dry ingredients. Stir until a sticky dough forms.
Turn the dough out onto a floured surface and knead for about 5 minutes, until smooth and elastic.
Place the dough in a greased bowl, cover with a clean kitchen towel, and let it rise in a warm place for about 1 hour, or until doubled in size.
Punch down the dough and turn it out onto a lightly floured surface. Roll it out to about 1/2 inch thickness.
Use a round cookie cutter or the rim of a glass to cut out individual English muffins.
Dust a baking sheet with cornmeal and place the muffins on it, leaving some space between each one. Sprinkle the tops lightly with additional cornmeal.
Cover the muffins with a clean kitchen towel and let them rise for another 30 minutes.
Preheat a skillet or griddle over medium heat. Cook the muffins for about 5-7 minutes on each side, until golden brown and cooked through.
Transfer the cooked muffins to a wire rack to cool slightly before serving.