Preheat oven to 350°F In a medium sizred bowl, cream together butter and honey till mixture is smooth. Beat in eggs one at a time. Stir in bananas, buttermilk and vanilla. When well blended, mix in bsaking powder, soda and salt. Blend in the rest of the ingredients. Turn mixture into a buttered loaf pan 9x5x3. Bake for 55 minutes. Cool on wire rack.