In a large bowl, mix dry ingredients until well blended. Add wet ingredients, adding the raspberries last. Stir until moistened. Do not overmix. Spoon into 18 muffin cups, greased. Bake at 375 degrees for 20 minutes or until muffins test done.
Recipe by Amish 365 at https://www.amish365.com/raspberry-muffins/