In a standing mixer bowl, mix the sugar into the warm water. Add in the yeast and lightly stir together. Allow to sit for 5-10 minutes until the yeast has “bloomed.” It will look foamy.
Mix in the melted butter and salt to the yeast mixture. Begin adding the flour one cup at a time and knead together on low speed or by hand until the dough comes together and is smooth and elastic. Roll into a ball and allow to rise for 1 hour or until doubled.
Once the dough doubles, grease two 9x5 loaf pans. Punch the dough down and knead for a few minutes. Divide in half and shape each half like a bread loaf and placed in the greased pans. Allow to rise for 30 minutes or until the dough is pass the top of the loaf pans by 1 inch.
Preheat the oven to 350F (175C) and bake the bread for 30 minutes or until golden brown. Remove the loaves from the pans and allow to completely cool on a cooling rack before slicing.