Preheat oven to 300°F. Line a large baking sheet with a silicon mat or parchment paper.
Combine all of the ingredients in a large bowl and stir until moistened.
Spread mixture onto the prepared baking sheet and bake for 45 minutes, stirring every 15 minutes. Allow to cool completely, the granola will begin to obtain a crunchy texture as it cools.
Let the granola cool to room temperature before storing so that it doesn't retain moisture and will last longer. Store in an airtight container like a glass mason jar at room temperature for 1 week or in the freezer for up to 3 months.