Easy Pumpkin Bars With Cream Cheese Frosting

Name: Easy Pumpkin Bars With Cream Cheese Frosting
Ingredients: ½ cup (1 stick) unsalted butter, room temperature, plus more for pan; 1 ⅔ cups all-purpose flour; 1 teaspoon ground cinnamon; ½ teaspoon fresh ground nutmeg; ¼ teaspoon ground allspice; Pinch ground cloves; ½ teaspoon coarse salt; ½ teaspoon baking powder; ½ teaspoon baking soda; 1 cup pure pumpkin puree (from a 15-ounce can); ½ cup milk, room temperature; 1 ½ cups sugar; 2 large eggs, room temperature; 8 ounces cream cheese, room temperature; ¼ cup (½ stick) unsalted butter, cut into pieces, room temperature; Pinch coarse salt; 1 cup confectioners' sugar, sifted