In a large bowl, add warm water, warm milk, salt, sugar, and softened butter.
Microwave the mixture for about a minute, making sure it's warm to the touch but not boiling (around 95°F to 115°F).
In a separate bowl, combine the instant yeast and flour.
Gradually add the flour mixture to the wet ingredients in two batches, stirring to combine. The dough will be sticky at this stage.
Transfer the sticky dough onto a floured surface.
Knead the dough for 6-8 minutes until it becomes smooth and elastic. Be careful not to use more than 4 cups of flour in total.
Grease a 9x13-inch baking pan.
Divide the dough into 15 equal pieces.
Roll each piece of dough into a smooth ball and place them in the greased pan, leaving a little space between each roll.
Cover the pan with a damp cloth and let the rolls rise in a warm place for 20-25 minutes, or until they have doubled in size.
Preheat your oven to 375°F (190°C).
Once the rolls have risen, brush them with melted butter or an egg wash.
Bake in the preheated oven for 15-20 minutes, or until the rolls are golden brown.
When the rolls are done, brush them with more melted butter for a soft and shiny finish.