– 1/2 cup warm water – 1/4 cup warm milk – 2¼ teaspoons dry active yeast – ⅓ cup granulated sugar + 1 tablespoon – ¼ cup unsalted butter melted – 1 egg – 1 egg yolk – 1 teaspoon vanilla extract – 2 1/2 cups all-purpose flour (add more as needed) – ½ teaspoon salt – Cooking spray – 2 cups powdered sugar – ¼ cup milk – 1 tablespoon light corn syrup – 1½ teaspoons vanilla extract