Spray a muffin tin with nonstick cooking spray and set it aside.
Roll dough into a square that is about ½-inch thick. Brush the dough with melted butter and salt.
Using a pizza cutter, cut the dough into 12 strips of equal size, approximately 1½ inches wide.
Group and stack the strips into 2 separate sections (6 strips each stack). Cut each stack into 6 pieces for a total of 12 stacks of dough. Each stack will be a roll.
Place each stack into the prepared muffin tin on their sides, cut-side up.
Cover with greased plastic wrap and let rest 30-40 minutes, or until the dough doubles in size. (Each roll should be about 1 inch higher than the muffin tin.)
Preheat oven to 375°F.
Bake for 12-17 minutes, or until golden brown.
Brush the tops of the rolls with melted butter while warm.
Sprinkle kosher salt on top if desired.