1/2 cup whole wheat flour
1/2 cup oat bran
Preheat the oven to 450°F. Prepare muffin cups with grease and flour or muffin liners and set aside.
Mix together the flours, oat bran, baking powder, baking soda, salt, and cinnamon, and set aside. In a separate bowl, cream the buttery spread and add the sugars. Beat until fluffy. Add the egg and mix well, scraping sides as needed. Mix in the buttermilk gently. Stir in the dry ingredients and fold in the apple chunks.
Divide the batter evenly among the prepared muffin cups. Bake for 10 minutes. Lower heat to 400°F, and bake for an additional 5 to 10 minutes (or until a toothpick inserted into the center of a muffin comes out clean). Cool the muffins. Remove from pan and serve.