Chocolate Devil’s Food Cookies

Ingredients

• 2 cups (240g) all-purpose flour
• 1/2 cup (42g) Dutch-processed cocoa powder
• 1/2 teaspoon baking powder
• 1 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1/4 cup butter, softened
• 1/4 cup (60g) Once Again Tahini, room temperature
• 1/2 cup (100g) granulated sugar
• ½ cup (106g) packed light brown sugar
• 1 large egg, room temperature
• 1 teaspoon vanilla extract
• 1 cup buttermilk, room temperature
• Confectioners sugar, as needed, for garnishing