Preheat the oven to 325 degrees F. Line a baking sheet with parchment paper.
In a small pot over medium heat, whisk together the syrup, oil and cinnamon. Cook until it just bubbles. Remove from the heat and cool slightly.
In a large bowl, add the oats, walnuts, sunflower seeds, brown sugar and a pinch of salt. Pour in the syrup mixture and toss well. In a small bowl, whisk the egg whites to combine. Pour over the granola and toss well. Evenly spread the mixture onto a sheet tray. Bake until golden, turning several times, about 35 to 40 minutes.
Remove from the oven to a serving bowl and cool. When cool add the remaining ingredients and serve.