Buttery No-Knead Crescent Rolls

warm water 2 1/4 teaspoon (1 envelope) active dry yeast 1/2 cup (1 stick) unsalted butter, melted and cooled 1/3 cup granulated sugar 1 large egg 4 cups all-purpose flour 1/2 teaspoon baking powder 1 teaspoon salt Additional butter, for brushing