Chewy Chai Bars

Name: Chewy Chai Bars
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Cuisine: American
Ingredients: 1/2 teaspoon ground ginger; 3/4 teaspoon ground cardamom; 1/2 teaspoon freshly ground black pepper; 1/2 teaspoon ground cloves; 1 teaspoon ground cinnamon; 2 cups all-purpose flour; 1 teaspoon baking powder; 1/4 teaspoon baking soda; 2/3 cup unsalted butter, melted; 2 cups brown sugar; 2 large eggs; 1 1/2 teaspoons vanilla extract; 1 reserved teaspoon of the spice mixture from above; 1/4 cup granulated sugar; 1 tablespoon unsalted butter, melted