For the caramelized apples, heat butter in a pan. When it starts bubbling, add the apples and saute for 2-3 minutes till they start turning soft. Add the brown sugar and cook further for 3-4 minutes. Add cinnamon powder and take off the heat and set aside.
Sift together buckwheat flour, whole wheat flour, baking powder, baking soda and salt. Keep aside in a big bowl.
Whisk together eggs, buttermilk and brown sugar till blended.
Add the egg-buttermilk mixture to the sifted flour and whisk together till smooth.
Heat a cast iron or heavy bottom pan, add a little butter (if you use a non stick pan, can skip the butter or even melt the butter and add to the batter) and pour a ladle full of pancake batter on top. Do not spread using the ladle, let the batter spread itself instead. Cook on medium heat till bubbles start to come out. Flip and cook for 2 mins till done.
Repeat for all the batter and serve warm topped with caramelized apples and maple syrup and may be some ice cream or a spoon of whipped cream if in indulgent mood.