Preheat a large frying pan over a high heat. Once the pan is hot, add the oats and toast, tossing frequently, for a minute or two.
Pour the oats into a bowl, return the pan to the heat and add the pecans, pumpkin seeds and buckwheat. Toast, tossing frequently, for two minutes, until everything smells wonderfully roasted and the pumpkin seeds have stopped popping violently. Pour into a separate bowl.
Put the pan back on the heat and add the butter, allowing it to melt and sizzle, until the sizzling stops and you have a thick foam made of fine bubbles on top – this will only take a minute or two. It should be burnt, so don’t be flapping. Just throw in the syrup and sugar, and heat for a minute, stirring to combine everything well, letting them bubble together. Ensure there are no lumps of sugar lurking about in the pan.
Add the oats to the pan and stir to coat them really well in the sweet, caramelised butter mixture. Once well-coated, allow them to cook for just a minute more, stirring constantly.
Pour the oats onto a baking sheet and allow to cool for a few minutes, then toss together with the toasted nuts, seeds and buckwheat, the dried apple and the cinnamon.
Once completely cool, tip into a large storage jar.