Blueberry Buttermilk Bran Muffins

oat bran (measured correctly and gluten-free if necessary)

plain nonfat Greek yogurt

low-fat buttermilk

vanilla extract

whole wheat or gluten-free* flour (measured correctly)

baking powder

ground cinnamon

salt

coconut oil or unsalted butter, melted and cooled slightly

large egg, room temperature

honey

molasses

frozen blueberries