(moist) bran muffins with fruit and nuts

Ingredients

• 2 cups wheat bran (mine was coarse but any will do)
• 2 cups buttermilk, shaken
• 1/4 pound or 1 stick butter, room temp
• 1/2 cup light brown sugar – lightly packed
• 4 extra large eggs – at room temp
• 3/4 cup unsulfured molasses
• 2 teaspoons grated orange zest
• 1 teaspoon vanilla extract
• 3 cups white whole wheat flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1 teaspoon kosher salt
• 2 cups raisins
• 2 cups diced banana – cut medium dice (2 bananas)
• 1 cup chopped walnuts, toasted (if time)