Name: Mexican Spiced Brownies
Ingredients: 2 sticks unsalted butter (plus extra for greasing pan); 2 cups granulated sugar; 4 large eggs; 1 tablespoon vanilla extract; 2/3 cup unsweetened cocoa powder; 1 cup all-purpose flour; 1 teaspoon ground Mexican cinnamon or cinnamon; 1/4 to 1/3 teaspoon chili powder; 1/2 teaspoon kosher salt; 1/2 teaspoon baking powder; 1/2 cup unsalted butter (softened); 2 ounces milk chocolate (melted); 1 teaspoon pure vanilla extract; 1 cup confectioners' sugar; 2 to 3 tablespoons buttermilk; Optional: Chili Powder & Cinnamon to sprinkle on top