Mix oats, nuts, cinnamon powder, and salt in a bowl.
Melt coconut oil and maple syrup in the microwave, add them to the bowl, and mix well.
Line a baking tray with parchment paper and spread the mixture evenly.
Bake in a preheated oven at 180°C for 20 minutes.
Flip once halfway through, bake until golden brown, then let cool.