Mix the ingredients and bake in the oven.
Preheat the oven to 170°C (338°F).
In a bowl, mix oatmeal, nuts, and cinnamon powder.
Add olive oil and maple syrup, then toss everything evenly.
Spread evenly on a baking pan.
Bake in the oven at 170°C (338°F) for 20 to 25 minutes.
Cool and transfer to a container.