In a large mixing bowl, combine the very warm water (about 120 degrees F), sugar, and yeast. Stir gently and let it sit for about 5-10 minutes until it’s frothy.
In another bowl, whisk together the flour and salt. If you're using table salt, remember to reduce the amount as noted in the ingredient checklist.
Once the yeast is activated, pour in the melted butter and gradually add the flour mixture. Using a wooden spoon or dough whisk, mix until a shaggy dough begins to form.
Transfer the dough to a floured surface and knead for about 8-10 minutes until it's smooth and elastic.
Place the kneaded dough in a greased bowl, cover it with plastic wrap or a kitchen towel, and let it rise in a warm place for about 1-2 hours, or until it has doubled in size.
Punch down the risen dough to release any air bubbles. Divide it into 12-16 equal pieces, shape each piece into a ball, and place them onto a greased baking sheet.
Cover the rolls with a kitchen towel and let them rise again for about 30-45 minutes, or until they have puffed up nicely.
While the rolls are rising, preheat your oven to 375 degrees F (190 degrees C).
Once the rolls have risen, bake them in the preheated oven for 20-25 minutes, or until they are golden brown on top.
Remove the rolls from the oven and brush the tops with the remaining melted butter for an extra touch of flavor. Serve warm.