Preheat the oven to 225°F. Combine the oats, coconut oil, honey, maple syrup, sea salt, vanilla, and chia seeds (if using) in a large bowl.
Distribute the mixture evenly onto 2-3 large baking dishes or cookie sheets. Bake for 2 hours, stirring every 30 minutes to ensure the granola crisps evenly.
If using coconut flakes or nuts: Take the granola out of the oven just before done. Add the coconut flakes and pecans. Bake for 5 more minutes or until lightly golden. If adding fruit or chocolate: Let the granola cool completely before adding any extras.
Store in an air-tight container for 2-3 weeks. Enjoy!