Blueberry Bran Muffins

Bahan-bahan (12 porsi)

• 1 cup all-purpose flour
• 1 ½ teaspoons baking powder
• ½ teaspoon baking soda
• ½ teaspoon salt
• ¼ cup shortening
• ½ cup brown sugar
• ¼ cup molasses
• 2 eggs
• 1 ½ cups wheat bran
• ½ cup milk
• ½ cup orange juice
• 2 cups blueberries (fresh or frozen)
• 1 tablespoon all-purpose flour