In a large bowl mix all ingredients except nuts and pumpkin seeds.
Mix all ingredients and place them on a tray prepared with parchment paper or a silicone mat.
Put in the oven for 20 min. Rotate after ten minutes and mix on the baking tray so it browns evenly. After 20 minutes add the walnuts and pumpkin seeds and bake for 10 more minutes.
It is ready when the oats begin to brown and starts smelling delicious.