Add sugar and yeast to warm water, stir to combine and allow to rest for 5 minutes, or until foamy and bubbly.
In the mixing bowl of your stand mixer combine 3 cups flour with 1 teaspoon salt. Pour in water/yeast/sugar mixture.
Attach dough hook to mixer and let mixer knead for 3-5 minutes. Add addtional flour a ¼ cup at a time, until the dough pulls away from the sides of the mixing bowl. Dough will be sticky but smooth.
Remove dough hook and cover bowl with plastic wrap. Allow dough to rest for 20 minutes in a warm spot.
Preheat oven to 400° F. Spray a 13X9 inch pan with non-stick cooking spray.
Punch down dough and remove from mixing bowl onto a lightly floured surface.
Divide dough into 20 equal sized pieces.
Roll each piece of dough into a ball and place in prepared pan.
Brush rolls with melted butter and sprinkle with course salt.
Allow dough to rest for 20 minutes while oven is preheating.
Bake for 13-15 minutes until a light golden brown. Turn on broiler and brown the tops for 1-2 minutes.
Remove rolls from the oven and brush with more melted butter.
Allow rolls to cool slightly before serving.
