Place yeast, water, sugar, and salt in bowl and stir until dissolved. Add flour and stir until well blended. Do not knead. Cover and let rise until double in size (about 1 hour).

Remove dough from bowl and place in 2 rounds on a greased cookie sheet sprinkled with cornmeal. Let rise an additional hour.

Brush top on dough with melted butter and bake at 425 degrees for 10 minutes. Reduce oven temperature to 375 degrees and cook for an additional 15 minutes. Serve warm. Makes 2 loaves.