Preheat oven to 350 F. Turn on convection, if available
In a large bowl, mix together oats, millet, nuts, and cinnamon. Set aside
In a small sauce pan, combine coconut oil, honey, and brown sugar. Heat until the sugar is dissolved, but be careful not to allow it to get over a simmer, or the sugar may seize. Remove from heat and stir in vanilla.
All the sugar/oil mixture to cool slightly, then pour over the dry ingredients. Stir until well combined. Spread on a baking sheet lined with parchment. Sprinkle with salt, to taste. Bake for 25-30 minutes, until golden brown.
Allow the granola to cool on the baking sheet for 30 minutes. Break into chunks and store in an airtight container.