Start by roughly chopping the almonds and hazelnuts.
Then chop the seeds and kernels using a food processor.
Heat the honey and butter in a pot. They should melt and become liquid.
Add the nuts, seeds, kernels, and oats to the pot and mix well.
Spread the mixture onto a baking sheet lined with parchment paper and bake in a conventional oven at 150 degrees Celsius (302 degrees Fahrenheit) for about 20 minutes. Keep an eye on them; they should be beautifully golden.
Remove from the oven and spread out over a tray, keeping them apart.
Let them cool completely and store in an airtight container.