In a large mixing bowl, combine warm water and sugar. Stir until sugar dissolves.
Sprinkle the Red Star Rise Active Dry Yeast over the water and sugar mixture. Let it sit for 5-10 minutes until the yeast is foamy.
Add the melted butter and salt to the yeast mixture. Stir to combine.
Gradually add 3 cups of all-purpose flour, one cup at a time, stirring with a wooden spoon or dough hook attachment until a dough forms.
Turn the dough out onto a lightly floured surface. Knead the dough for about 8-10 minutes, adding small amounts of flour as needed to prevent sticking, until the dough is smooth and elastic.
Place the dough in a lightly greased bowl, turning once to coat the surface. Cover the bowl with a clean kitchen towel or plastic wrap.
Let the dough rise in a warm, draft-free place for about 1 hour or until it has doubled in size.
Punch down the risen dough to release air. Turn it out onto a lightly floured surface and shape it into a loaf.
Place the shaped dough into a greased 9×5-inch loaf pan. Cover loosely with a kitchen towel and let it rise again for 30-45 minutes until it has risen about 1 inch above the pan.
Preheat the oven to 375°F (190°C).
Bake the bread in the preheated oven for 25-30 minutes, or until the top is golden brown and the bread sounds hollow when tapped.
Remove the bread from the oven and let it cool in the pan for 10 minutes.
Transfer the bread to a wire rack to cool completely before slicing.