Overnight Bran and Date Muffins

These are a lovely muffins filled with dates.  They are not overly sweet.  The muffins can be made and cooked on the same day, but are not as nice as if the mixture is left to stand overnight. 1 1/4 cups plain flour 1 teaspoon baking soda 1 teaspoon cinnamon 1/2 cup sugar 1 3/4 cups…