In a mixing bowl, combine warm water and granulated sugar. Sprinkle active dry yeast on top and let it sit for 5 to 10 minutes until frothy.

Stir in salt and vegetable oil until combined. Gradually add all-purpose flour until dough pulls away from the sides.

Knead the dough on floured surface for 8 to 10 minutes until smooth and elastic.

Place dough in a greased bowl, cover, and let it rise in a warm area for 1 to 1.5 hours until doubled in size.

Punch down the risen dough, divide into two, shape into loaves, and place in greased loaf pans.

Cover with a towel and let rise again for 30 to 40 minutes.

Preheat oven to 350°F (175°C). Bake for 25 to 30 minutes until golden brown and thermometer reads 190°F (88°C).

Remove from oven, brush with melted butter if desired, and cool for 10 minutes before transferring to wire rack to cool completely.