Gingerbread Cookie Bars with Cream Cheese Frosting

Ingredients

• 1 large egg
• 1 teaspoon baking powder
• 1 stick unsalted butter, at room temperature
• 1 1/2 sticks unsalted butter, at room temperature
• 1/2 cup unsulfured molasses
• 2 teaspoons vanilla paste
• 1 1/4 teaspoons ground ginger
• 2 cups powdered sugar, sifted
• 1/2 teaspoon baking soda
• 1/2 cup packed light brown sugar
• 1/2 teaspoon salt
• 1/4 teaspoon ground cloves
• 1/4 teaspoon ground nutmeg
• 1 teaspoon ground cinnamon
• 3 cups all-purpose flour
• 8 ounces cream cheese, at room temperature