In a large mixing bowl, stir together oats, almonds, salt and cinnamon (do NOT add coconut flakes).
In another bowl mix together oil, honey, and vanilla.
Stir liquid ingredients into the oat mixture and set aside.
Preheat oven to 300F / 150C degrees
In a stand mixer, beat aquafaba and cream of tarter until peaks form. This can take 3-5 minutes depending on the mixer.
Stir aquafaba into the oat mixture and then spread out onto a paper or silpat lined baking tray.
Bake for 5-10 minutes until just starting to brown. Remove from oven and stir in coconut flakes. Cook for 10-15 minutes longer or until golden brown. Check regularly as this can burn easily and stir every few minutes for even cooking.