Loaded with nooks and crannies, these griddle-cooked muffins are perfect for toasting. Better than anything from the store.

Combine the starter, warm milk, melted butter, and sugar in a large bowl.
Add the flour and salt. Mix until a soft, slightly sticky dough forms. Knead for 5-7 minutes.
Cover and let rise at room temperature for 3-4 hours, then refrigerate overnight.
In the morning, turn the dough out onto a surface dusted with cornmeal. Roll or pat to about 3/4 inch thickness.
Cut rounds using a 3-inch biscuit cutter or the rim of a wide-mouth mason jar lid.
Gather the scraps, re-roll, and cut more rounds until all dough is used.
Place rounds on a cornmeal-dusted baking sheet. Dust the tops with cornmeal. Cover and let rise for 45-60 minutes.
Heat a cast iron skillet or griddle over medium-low heat. You want it around 325°F.
Cook the muffins for about 7-8 minutes per side until deeply golden and cooked through. The internal temperature should reach 190°F.
Let cool completely on a wire rack. Split with a fork (not a knife!) to preserve the nooks and crannies.