I have tried the following substitutions in many combinations and these are still good. * Raisins instead of blueberries or no fruit at all * ¼ cup brown sugar instead of ¼ cup honey * no bananas * one banana * 2 tbsp of canola for 2 tbsp of corn syrup although I wouldn't recommend this for obvious reasons. * Also, you could try 2 cups of oat bran and ½ cup apple fiber. I have not tried this yet, but will the next time I make muffins.Apple fiber is an even better fiber than oatbran, and therefore even better for lowering LDL and raising HDL! i hope you enjoy these!