Put the oats, baking powder, chestnut and oat cream in a food processor and whiz until you get a thick, coarse paste. Rest for ten minutes.
Mix the flaxseed with the water and rest for ten minutes then add to the oat mixture.
If the batter is too thick add some oat milk - you should get a thick but pourable batter.
Fold in the mixed peels or cranberries.
Oil a pancake pan and add dollops of the batter. Using the base of the spoon, make them into circular patties. Cook for a couple of minutes, then turn them over.
Remove them to a plate and make more pancakes using up the remaining batter.