Combine flour, apples, buckwheat flour, sugar, dates, baking powder, baking soda and salt in large bowl. Make well in center of mixture. combine buttermilk, oil and egg in another bowl and add to dry ingredients, stirring just until moistened. divide batter evenly among muffin cups coated with cooking spray. Bake at 375F for 20 minutes. Remove from pan immediately. Let cool on wire racks. Makes 12 muffins.