Bran Muffins with Pineapple

INGREDIENTS

• 1 cup raisins
• 1 cup wheat bran
• 1 cup all-purpose flour, (spooned and leveled)
• 3/4 cup whole-wheat flour (spooned and leveled)
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 1 teaspoon coarse salt
• 1/2 cup plain low-fat yogurt
• 1/4 cup packed dark-brown sugar
• 1/2 cup molasses
• 1/2 cup (1 stick) unsalted butter, melted
• 1 large egg
• 1 can (20 ounces) pineapple chunks, drained and chopped