Dissolve sugar and yeast into warm water in a bowl and allow to sit until bubbly.
Add in salt, 1 1/2 Tbsp fresh rosemary or 3/4 Tbsp dried rosemary and flour.
Mix until dough forms and then knead until soft, about 10 minutes.
Spray inside of a bowl with cooking spray or coat with oil.
Place dough in bowl and allow to rise for 1 hour or until double.
Punch down dough and form into two round loaves.
Cover a baking sheet with parchment paper and sprinkle with cornmeal and place loaves onto sheet.
Brush with melted butter, sprinkle with remaining rosemary and with some coarse salt.
Cover with plastic wrap and allow to rise in a warm place for 1 hour or until double.
Heat oven to 375 degrees F. and bake for 15 minutes or until golden brown.