Put the oats in a bowl.
Chop the almonds and walnuts finely.
Add almonds, walnuts, sunflower seeds, and coconut flakes to the bowl and mix well.
Add olive oil and maple syrup, and toss everything evenly.
Spread the mixture evenly on a baking tray lined with parchment paper.
Bake in a preheated oven at 180°C (356°F) for 20 minutes.
Let cool, then store in an airtight container.