Irish Soda Bread Muffins

Name: Irish Soda Bread Muffins
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: American
Ingredients: 1 1/4 cups whole wheat flour; 1 cup all-purpose flour; 1/2 cup granulated sugar; 2 teaspoons baking powder (I recommend aluminum free); 1/4 teaspoon baking soda; 1/4 teaspoon kosher salt; 1 teaspoon caraway seed; 1 large egg (at room temperature); 1 cup nonfat milk (plus 1 tablespoon, at room temperature); 1/4 cup unsalted butter (melted and cooled to room temperature); 1/4 cup plain nonfat Greek yogurt (at room temperature); 3/4 cup dried currants; Optional: 2 tablespoons sparkling sugar