Preheat oven to 300°. Line a baking sheet with parchment paper.
Mix together the oats, cinnamon, and salt in a bowl. Set aside.
Melt coconut oil in a pot. Remove from heat and stir in the maple syrup and vanilla. Pour over the oat mixture and toss to coat. Make sure all of the oats are coated.
Spread granola in an even layer on the baking sheet. Bake for 20 minutes, stir. Press down into an even layer and bake for 15 more minutes, until lightly golden. Let it cool completely, it will become crunchy as it cools.
Store in an airtight container at room temperature for up to 3 weeks.